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Y Combinator, LLC (YC) is an American technology startup accelerator and venture capital firm launched in March 2005 which has been used to launch more...

in predicate logic. A combinator is a higher-order function that uses only function application and earlier defined combinators to define a result from...

In computer programming, a parser combinator is a higher-order function that accepts several parsers as input and returns a new parser as its output. In...

In combinatory logic for computer science, a fixed-point combinator (or fixpoint combinator) is a higher-order function (i.e., a function that takes a...

startups have completed the Y Combinator Accelerator program. In 2015, Mike Isaac described Y Combinator as: "Y Combinator accepts batches of start-ups...

Y combinator may refer to: Y Combinator, an American tech startup accelerator Y combinator (mathematics), a fixed-point combinator This disambiguation...

led artificial intelligence efforts at Apple, served as a partner at Y Combinator, and is a notable technology investor in companies such as Uber, Instacart...

Canadian-American venture capitalist who is the CEO of the startup accelerator Y Combinator and a founder of the venture capital fund Initialized Capital. He previously...

The SKI combinator calculus is a combinatory logic system and a computational system. It can be thought of as a computer programming language, though it...

Corporation for $43.4 million in March 2012. In 2011, Altman joined Y Combinator, a technology startup accelerator and venture capital firm, and was the...

entrepreneurship. It is run by the investment fund and startup incubator Y Combinator. In general, content that can be submitted is defined as "anything that...

of Applied Intuition. Prior to Applied Intuition, he was the COO of Y Combinator from 2015 to 2017. He was also the co-founder and CEO of Talkbin (acquired...

1982) is a partner at Y Combinator and the co-founder of two startups, Justin.tv/Twitch and Socialcam. He first joined Y Combinator in 2013, advising hundreds...

(born 11 August 1985) is a British entrepreneur and a group partner at Y Combinator. Blomfield grew up in Buckinghamshire and attended Dr Challoner's Grammar...

evaluation and innermost graph reduction is referred to as eager evaluation. Combinator graph reduction is a fundamental implementation technique for functional...

best known for being a founding partner of the seed stage venture firm Y Combinator. Livingston was born in Minneapolis, Minnesota, and later relocated to...

Store), co-founding the startup accelerator and seed capital firm Y Combinator, a number of essays and books, and the media webpage Hacker News. He is...

but that approach did not gain traction. They also participated in Y Combinator's accelerator program while building out the first version of the platform...

Blackwell is the founder and former CEO of Anybots and a partner at Y Combinator. Blackwell grew up in Saskatoon, Saskatchewan, Canada. Blackwell studied...

websites used for online chat. Chat room Shu, Catherine (5 August 2013). "Y Combinator Startup 7 Cups Of Tea Connects People In Need Of Emotional Support With...

system is a variant of combinatory logic that takes as primitive the combinators B, C, K, and W. This system was discovered by Haskell Curry in his doctoral...

the population part with their money."); his description as "The Great Combinator" became a catchphrase in the Russian language. His exploits have been...

than other more popular alternatives, such as lambda calculus and SKI combinator calculus. Thus, they can also be considered minimalist computer programming...

in 2024 by Nico Laqua and Emily Yuan, The company participated in Y Combinator's Summer 2024 batch. Laqua serves as chief executive officer and chief...

first web applications, and later the venture capital funding firm Y Combinator, both with Paul Graham, Jessica Livingston and Trevor Blackwell. He later...

Collison. It was on-boarded to Y Combinator that same year. Since Taggar and his co-founders were "non-technical," Y Combinator accepted them with the condition...

Ferdowsi as a startup company, with initial funding from seed accelerator Y Combinator. Dropbox has experienced criticism and generated controversy for issues...

most influential companies of the year by Time (magazine). List of Y Combinator startups Social commerce Mukul, Pranav (28 April 2025). "IPO-bound Meesho...

The company was founded in 2005 and received initial funding from Y Combinator, and completed Series A and B financing led by Sequoia Capital and New...

high-profile data breaches in the technology industry, Vanta emerged from the Y Combinator startup accelerator program. In its early years, the company grew with...

$500 million. Since 2023, Bosmeny has been a Visiting Group Partner at Y Combinator. Bosmeny attended Harvard University where he was awarded both a AB in...

account of two men going into a forest and discussing the unusual "birds" (combinators) they find there (bird-watching was a hobby of one of the founders of...

the programming language Haskell. It is based on higher-order parser combinators, so a complicated parser can be made out of many smaller ones. It has...

technology. In March 2026, Starcloud became the fastest unicorn in Y Combinator history, hitting a $1.1bn valuation just 17 months after completing the...

"Ashton Kutcher launches A+: discover the best products through friends". Y Combinator. Archived from the original on October 17, 2015. Retrieved April 4, 2015...

that can simulate any other interaction system is that of interaction combinators. Its signature is Σ = { ϵ , δ , γ } {\displaystyle \Sigma =\{\epsilon...

aggregator. In March 2026, Starcloud became the fastest unicorn in Y Combinator history, hitting a $1.1bn valuation just 17 months after completing the...

investment committee chair in 2012, and was a part-time partner at Y Combinator from 2015 to 2017. He was granted New Zealand citizenship in 2011, which...

VR startup. The founders were accepted into the Winter 2017 batch Y Combinator's 12-week accelerator program; 3 weeks in, they pivoted the company to...

mid-size tech and media companies, and startup companies from the last Y Combinator incubator class), only one Fortune 50 company used Gmail – Google itself...

Twitter. He left Twitter in 2014. In November 2014, Rowghani joined Y Combinator as a part-time partner focusing on helping YC alumni scale their companies...

was founded in 2011, and officially launched in 2012 as part of the Y Combinator startup accelerator program. As a low-code/no-code platform, Zapier is...

co-founder: Sam Altman, former president of the start-up accelerator Y Combinator President and co-founder: Greg Brockman, former CTO, 3rd employee of Stripe...

renamed to Stash in 2024. He was a partner at Silicon Valley incubator Y Combinator. He gained widespread attention for his "lifecasting" experiment on Justin...

also a partner at the startup accelerator and venture capital firm Y Combinator. Ohanian is based in Florida where he lives with his wife, tennis player...

commercial electricity generation. In 2015, Helion participated in the Y Combinator startup accelerator as part of its Summer 2013 (S14) batch. The management...

needs expansion with: Information about their initial rejection by Y Combinator prior to going to TechStars and Twilio. You can help by adding missing...

company graduated from Y Combinator's startup accelerator in 2013. Webflow raised venture funding from Khosla Ventures, Y Combinator, Tim Draper, and other...

an extension of the simple let expression which uses the fixed-point combinator to implement recursion. Dana Scott's LCF language was a stage in the evolution...

company participated in the summer 2015 batch of startup accelerator Y Combinator who provided the seed funding, and it launched with 200 companies already...

Michael Seibel. Shear and Justin Kan were part of Y Combinator's first class in 2005. As part of Y Combinator, the two built a calendar application called Kiko...

Karunanidhi. HackerRank is a Y Combinator-backed company, and was the first Indian company accepted into Y Combinator. They also participated in TechCrunch...

buyers and suppliers. It's investors include Accel, Sequoia, Wing VC, Y Combinator, and Sumitomo Mitsui Banking Corporation, alongside debt partners such...

several observations: In 1934, Curry observes that the types of the combinators could be seen as axiom-schemes for intuitionistic implicational logic...

known as clickers. The company raised $20,000 in venture funding from Y Combinator in 2008. Jeff Vyduna, Brad Gessler, and Sean Eby were coworkers at Deloitte...

Buchheit left Facebook to become a partner at the investment firm Y Combinator. From 2006 (when he started investing) until 2008, Buchheit invested about...

major corporations to buy the company. The same year, speaking at Y Combinator's Startup School course at Stanford University, Zuckerberg made a controversial...

Ventures Venrock Versant Ventures Vivo Capital Walden International Y Combinator Abingworth Acton Capital Atomico Ventures Balderton Capital BGF Cottonwood...

combinatory logic using only the symbols 0 and 1. Using the S and K combinators, complex Boolean algebra functions can be made. BCL has applications...

non-interdefinable combinators. Jacobson interprets personal pronouns as the combinator I; their binding is aided by a complex combinator Z, as in "Mary lost...

with fewer complications", according to startup accelerator Y Combinator. Y Combinator released the Simple Agreement for Future Equity ("SAFE") investment...

Säve Airport near Gothenburg. The company participated in the 2019 Y Combinator's Winter Batch and subsequently unveiled its design for the ES-19 all‑electric...

accepted into Y Combinator's Winter 2017 batch, becoming the first Hungarian company to participate in the programme. Following Y Combinator, the company...

used in two places. The W combinator does only the latter, yielding the B, C, K, W system as an alternative to SKI combinator calculus. Adding an additional...

Daniel Ha and Jason Yan as a Y Combinator startup. Disqus was first developed in the summer of 2007 as a Y Combinator startup. It was headed by Daniel...

co-authoring Etherpad, co-founding AppJet, and for his work as a partner in Y Combinator. Iba graduated from the Massachusetts Institute of Technology in 2005...

from 21st Amendment Brewery to a Y Combinator partner and was admitted to the summer of 2012 batch. Y Combinator helped Mehta raise $2.3 million in funding...

MiraclePlus, a startup incubator in China. Previously, Lu was the head of Y Combinator's China until it was shut down. He was formerly the chief operating officer...

in 2009 and is based in San Francisco, California. It is backed by Y Combinator, and its investors include Andreessen Horowitz, Max Levchin, and Keith...

QuickCheck is a software library, a combinator library, originally written in the programming language Haskell, designed to assist in software testing...

immigrants". The Immigration OS project has also been criticized by Y Combinator co-founder Paul Graham, who wrote that Palantir is "building the infrastructure...

independent firm after Y Combinator China was closed. It is one of the largest startup accelerators in China. In 2018, Y Combinator (YC) established a unit...

iterative combinators α + {\displaystyle \alpha +} and α ∗ {\displaystyle \alpha *} need special attention when used in a Packrat parser: these combinators introduce...

social media profiles. Snappr's key investors include seed accelerator Y Combinator. Snappr was founded in May 2016 by Matt Schiller and Ed Kearney in Sydney...

essentially equivalent to a combinatory logic based upon the combinators B, C, I, K, S and a combinator for a universally quantified nand function which he called...

cum laude. Bernstam attended the Y Combinator program in 2006, launching Scribd. He went on to attend the Y Combinator program again in 2011, this time...

engineers Shola Akinlade and Ezra Olubi, the company participated in the Y Combinator startup accelerator in 2016. In October 2020, Paystack was acquired by...

Windows, Mac OS X, and Android operating systems. Sixa has been backed by Y Combinator to join its Summer 2016 batch, and as of July 2016, raised more than $261...

foundation, the lambda calculus. Y in the emblem refers to the fixed-point combinator and the reappearance of the picture in itself refers to recursion....

in the world with an average deal count of 929 per year, followed by Y Combinator and Techstars. Founder Saeed Amidi came from a family of Iranian immigrants...

Draft). CSS Working Group. 11 November 2022. 15.4. Subsequent-sibling combinator (~). Archived from the original on 22 November 2024. Retrieved 28 November...

Jeremy Stoppelman. Smith began Lever in 2012 and was accepted into Y Combinator with the goal of applying this framework to the problem of hiring talent...

computing. Rigetti Computing received funding from startup incubator Y Combinator in 2014 as a so-called "spaceshot" company. Later that year, Rigetti also...

and k are sufficient to perform any calculation, as described in SKI combinator calculus. As a brief example, the identity function i can be implemented...

Šidlauskas. In 2021, it became the first Lithuanian startup to join the Y Combinator accelerator program (W21 batch). That same year, it raised a seed funding...

the tech industry instead after their startup was accepted into the Y Combinator accelerator in 2019. After their departure in early 2020, 15 returned...

2021, the startup was selected for the summer accelerator program at Y Combinator and received an investment of $125,000. Later that year, Awesomic raised...

chief executive officer of imeem. He currently works as a partner at Y Combinator. Caldwell was born in El Paso, Texas, and graduated from Stanford University...

and writer. He was the second employee of Kickstarter and worked at Y Combinator. His writing has appeared in The Atlantic, WIRED, and the Los Angeles...

1969) is co-founder and president of The Good Food Institute (GFI), a Y Combinator funded non-profit that promotes plant-based and cultivated meat. He is...

"The top 8 startups from Y Combinator Winter '16 Demo Day 2 – TechCrunch". techcrunch.com. Retrieved 2018-04-18. Combinator, Y. "Mux Is Google Analytics...

respects Islamic values. It quickly gained traction, securing funding from Y Combinator and other investors. Significant milestones include hitting one million...

Opentrons in 2014 and is the current CEO. In 2016, Opentrons was part of Y Combinator's Winter cohort of startups. Opentrons robots have had a variety of uses...

Huffman and Ohanian were accepted in Y Combinator's first class. Supported by the funding from Y Combinator, Huffman coded the site in Common Lisp and...

was founded by Matt Tran, Mike Wadhera, and Sanjay Dastoor during Y Combinator's winter 2018 class. Skip differentiated itself from competitors by making...

Phonetic Alphabet letter for a close front rounded vowel Y combinator, a fixed-point combinator in combinatory logic Y, the Bessel function Y, dependent...

streaming, and in mid-2012 he moved to East Palo Alto, California to attend Y Combinator for it. In 2013 the startup switched its focus to providing live video...

company, then known as Next Technologies, entered the seed accelerator, Y Combinator. Modal was founded in 2015 out of Khosla Ventures. The idea came because...

talked with Graham after the lecture and he invited them to apply to Y Combinator, his startup incubator. Huffman came up with their original idea, My Mobile...

Marin Software for $25.5 million. In 2019, Flora was brought on to Y Combinator as a Visiting Group Partner. He was promoted to a Group Partner in 2021...

postfixpoint). In combinatory logic for computer science, a fixed-point combinator is a higher-order function f i x {\displaystyle {\mathsf {fix}}} that...

by Joris Poort (CEO) and Adam McKenzie (CTO), Rescale launched in Y Combinator and has been recognized as a top company multiple times, and as recently...

from 21st Amendment Brewery to a Y Combinator partner and was admitted to the summer of 2012 batch. Y Combinator helped Mehta raise $2.3 million in funding...

platform that connected technical workers to employers, and was part of Y Combinator Winter 2015 class. In 2016, the company evolved into Tara AI, a product...

acquired Requestly, an HTTP interception and mocking tool backed by Y Combinator, for an undisclosed amount. In June 2025, BrowserStack announced the addition...

for a place in the Y Combinator startup accelerator program. The company was accepted into the Summer 2011 batch of Y Combinator and launched the first...

classifier of an elementary topos. In combinatory logic, the looping combinator, (S I I (S I I)). In group theory, the omega and agemo subgroups of a...

focus to business customer service software after participating in Y Combinator in 2022. Typewise develop a platform that automates customer service interactions...

Brazilian tech recruitment platform GeekHunter. It participated in Y Combinator's Winter 2021 startup accelerator program. Howdy was included in the Inc...

duration of the program which is 6 months. This is twice the duration of Y Combinator's program. The program [SqP] is a year-long web / mobile business creation...

cryptocurrency app's founder Brian Armstrong $200,000. Garry Tan left Y Combinator in 2015 to focus on Initialized full time. On June 7, 2016, the firm announced...

business Homejoy. After Homejoy shut down, Cheung continued working for Y Combinator as a partner, until February 2021. Cheung grew up in a small town in South...

{Y}}N)} , where Y {\displaystyle {\textsf {Y}}} denotes Curry's fixed-point combinator. Then X = ( N X ) = ( ( m X ) Z ) {\displaystyle X=(NX)=((mX)Z)} by definition...

Chesky. He met Michael Seibel at SXSW, who would later connect him with Y Combinator and led to significant investment for Airbnb. The company re-launched...

News and startups, accelerators and venture capital firms, including Y Combinator, as well as Ellen Pao and other business professionals for TechCrunch...

software company that built tools for the eBay platform and funded by Y Combinator. Collison later moved to Silicon Valley. Auctomatic was acquired for $5...

Geoff Ralston is the former President of Y Combinator. He was the CEO of La La Media, Inc., developer of Lala, a web browser-based music distribution site...

Andy Su, and Andrea Barrica, indinero graduated the startup incubator, Y Combinator in 2010. On May 8, 2018, indinero acquired San Jose-based firm tempCFO...

firm. In 2010, Yodlee partnered with Y Combinator, providing its financial services platforms to all Y Combinator–funded companies. Yodlee then was said...

Oklo Inc. is a publicly traded American nuclear power company based in Santa Clara, California. The company develops a small modular nuclear reactor, the...

enthusiasm stemmed from reproduction, not originality. In March 2025, Y Combinator reported that 25% of startup companies in its Winter 2025 batch had codebases...

2016 that raised $256,000. That year, it was also accepted into the Y Combinator accelerator program. Tovala launched to the general public in 2017. It...

Levchin appeared as a speaker at the 2007 Startup School organized by Y Combinator, where he described his own journey as an entrepreneur and the mistakes...

Quora was one of the Summer 2014 Y Combinator companies, although it was described as "the oldest Y-Combinator ever". In March 2016, Quora acquired...

Rust programming language. Versions 1.x and 2.x are written in Go. Y Combinator-backed company Errplane began developing InfluxDB as an open-source project...

After founding Legalist at the age of 20, Eva led the company through Y Combinator’s S16 accelerator program. By 2025, Legalist had approximately $1.5 billion...

BufferBox was awarded the 2012 Velocity Venture Fund, and went through the Y Combinator program in Silicon Valley. After conducting a pilot trial at the University...

Founder mode is a term used and popularized by Y Combinator co-founder Paul Graham in a September 2024 essay in response to a talk delivered by Airbnb...

co-founded Stacks (formerly Blockstack) with Ryan Shea and went through Y Combinator in 2014. His work mainly focused on sensor networks, blockchains, and...

Weebly, a subsidiary of Block, Inc., is an American web hosting and web development company based in San Francisco, California. Founded in 2006 by David...

and competitors. DataRank was founded in 2011 and graduated from the Y Combinator seed accelerator in 2013. University of Arkansas graduates Ryan Frazier...

(as it was known then) was founded by psychologist Glen Moriarty as a Y Combinator startup. The company later rebranded itself as simply 7 Cups. The company...

launched in July 2012 by CEO Michael Carvin and CTO Philip Camilleri as a Y Combinator startup company. The company's product offering initially revolved around...

Stow, Vanessa Torrivilla, and Joel Gillman. The site was accepted into Y Combinator in 2013. Time magazine named Goldbelly one of the 50 Best Websites of...

financed by a Kickstarter fundraising campaign and subsequently backed by Y Combinator. The Kickstarter campaign aimed to raise 200,000 US$ and finished with...

launched in August 2011, particularly following its participation in the Y Combinator incubator program in Summer 2011 and its role in launching the Reproducibility...

basic combinators, even though they were chosen with great attention to economy. What characterises our calculus is not the exact choice of combinators, but...

used for pseudo-classes. Multiple simple selectors may be joined using combinators to specify elements by location, element type, id, class, or any combination...

software engineer Mark Hansen. The company received seed funding from Y Combinator, the Legal Services Corporation, the Robin Hood Foundation, Harvard University...

company's headquarters is in San Francisco. The site received funding from Y Combinator. Product Hunt launched on November 6, 2013, when it began as an email...

in 2014. It participated in a Y Combinator startup incubation program in early 2016, and has been funded by Y Combinator, Sam Altman, Paul Graham, Alex...

Labor and August Erséus founded the company in 2023. It went through Y Combinator's Winter 2024 accelerator batch, then renamed itself from Leya to Legora...

techcrunch.com. 5 Feb 2019. Combinator, Y (27 January 2016). "L.'s Talia Frenkel on Turning a Concept Into a Company". Y Combinator. "Our Movement". L. Archived...

package, and custom themes. It was based in San Francisco and funded by Y Combinator. Updating to Posterous was similar to other blogging platforms. Posting...

needed] Strikingly is the first Chinese company to graduate from the Y Combinator seed accelerator. Chief executive officer (CEO) David Haisha Chen, chief...

moonshot project at Y Combinator, where Huh worked after leaving The Cheezburger Network. The company raised $17M from Y Combinator and Founders Fund and...

as well as reduction in parental alcohol consumption. In May 2016, Y Combinator, an American company with the aim of providing seed funding for start-up...

Andrew D. Mason (born 1981) is an American businessman and entrepreneur. He is the founder and former CEO of Groupon, a Chicago-based website offering...

raised $50 million in Series C financing led by Sam Altman, President of Y Combinator. In 2017, Asana integrated with Gmail, and launched its app in French...

Geoffroy (2015). "Nom, A Byte oriented, streaming, Zero copy, Parser Combinators Library in Rust". 2015 IEEE Security and Privacy Workshops. pp. 142–148...

William MacAskill. In 2015, the organization was accepted into the Y Combinator startup accelerator program. Todd wrote the book 80,000 Hours: Find a...

Meteor is developed by Meteor Software. The startup was incubated by Y Combinator and received $11.2M in funding from Andreessen Horowitz in July 2012....

won a competition which resulted in the company being accepted into Y Combinator, a Silicon Valley incubator. Torba and Szymanski moved to Palo Alto in...

at New York University, famous for his discovery of the universal iota combinator and his continuation-based approach to scope. Barker received a bachelor’s...

the company was selected by Silicon Valley–based startup accelerator Y Combinator to be part of its program for the Winter 2015 batch. After Bluesmart Inc...

Olubi. Akinlade's company Paystack was a part of startup accelerator Y Combinator's 2016 batch of startups and it was founded in 2015. The company was created...

including 90 in its portfolio and 66 startups through its funding of Y Combinator's Start Fund. The company invested $100 million in GitHub, which netted...

Church–Rosser theorem Extensionality Church numeral Fixed point combinator SKI combinator calculus B, C, K, W system SECD machine Graph reduction machine...

280 North was a web software development startup company formed in 2008 by college friends Tom Robinson, Francisco Tolmasky, and Ross Boucher. It was purchased...

November 1, 2012. Robert Greene. The Aha! Moments That Made Paul Graham's Y Combinator Possible. Fast Company. November 12, 2012. ‘Mastery’ By Robert Greene:...

luminance SK (people mover), a vehicle SK calculus, an alternate form of SKI combinator calculus SK radar, an American air-search radar used during World War...

diagnostic testing for gonorrhea and sepsis. It was backed by a16z and Y-Combinator and the testing was made available to over 10,000 patients in medical...

Scribd with Jared Friedman, a fellow Harvard student, and they attended Y Combinator in the summer of 2006. Scribd was launched from a San Francisco apartment...

Hindley, J. Roger; Seldin, Jonathan P. (2008). Lambda-Calculus and Combinators: An Introduction (2nd ed.). Cambridge, UK: Cambridge University Press...

co-founded Scribd with Jared Friedman and attended the inaugural class of Y Combinator in the summer of 2006. There, Scribd received its initial $120,000 in...

Kalibrr was the first startup from the Philippines to be accepted into Y Combinator and was funded by, Kickstart Ventures, Learn Capital, Patamar Capital...

funds from notable Silicon Valley investors including 500 Startups, Y Combinator, CrunchFund, SV Angel, and Alexis Ohanian. In February 2014, the company...

deleted completely. DailyBooth was funded by the startup funding firm, Y Combinator. DailyBooth was founded and opened in February 2009 by Jon Wheatley and...

for businesses and organizations. The company is an alumnus of the Y Combinator accelerator program. Canopy Labs was acquired by Drop. Canopy Labs was...

including actor Patrick Dempsey, 23andMe founder Anne Wojcicki, and Y Combinator president Sam Altman Heyman then served as a General Partner at Pioneer...

company rebranded from Aboki Africa to Grey and was accepted into Y Combinator's Winter Batch Accelerator Program (YC W22) after completing a pre-seed...

Mathematical Symbols in the BMP (PDF). ISO/IEC JTC1/SC2/WG2 N2191. "Update: U+237C ⍼ ⍼". Y Combinator. 17 June 2023. Retrieved 7 August 2024....

application process is open to anyone but highly competitive. For instance, Y Combinator and TechStars have application acceptance rates between 1% and 3%. Seed...

Joseph Gebbia Jr. (/ˈdʒɛbiə/; born August 21, 1981) is an American designer and entrepreneur, and a co-founder of Airbnb. In 2025, he joined the Department...

including the first for functional programming based on lazy evaluation, combinator graph reduction, and polymorphic types: SASL (1972), Kent Recursive Calculator...

tour dates globally. The company was first established in 2007 as a Y Combinator-backed startup. In 2015, it merged with CrowdSurge—a company that provided...

earlier that year. Y Combinator accepted OpenSea into its accelerator program in 2018. After finishing the pre-seed round by Y Combinator, OpenSea raised $2...

hand-written parser based on the recursive-descent parsing algorithm. Parser combinator – a higher-order function used in combinatory parsing, a method of factoring...

translation from λ-terms to terms of the SKI combinator calculus by eliminating λ-abstractions using combinators, pcas can be characterized by the existence...

Perl's autovivification A Use of the Y Combinator in Ruby - Implements autovivification in Ruby with the Y Combinator. Hash#autonew in the Ruby gem "facets"...

a fixed point of that expression. An important fixed-point combinator is the Y combinator used to give recursive definitions. In denotational semantics...

On May 19, 2021, Netlify announced the acquisition of FeaturePeek, a Y Combinator and Matrix Partners backed startup that enables developer teams to preview...

Quartzy has raised nearly $25 million in total financing, including a Y Combinator-backed seed round, and subsequent Series A and Series B rounds. Buhr,...

cities across Kurdistan Region. The super-app is the first and only Y Combinator-backed startup in Iraq. Lezzoo was founded in February 2018 by Fastwares...

formalism, one can obtain so-called fixed-point combinators (the best-known of which is the Y combinator); these, by definition, have the property that...

deception and subversiveness that ostensibly resulted in his removal from Y Combinator ultimately resulted in the board's decision to remove him. In April 2026...

with $3 million in pre-series A funding and the company took part in Y Combinator's Winter 2019 (W19) batch. By April 2025, the company had raised more than...

Zesty is an online healthcare appointment booking service invented by Natalie and Maddie based in London, England. Lloyd Price and James Balmain founded...

Michael Seibel 2005 Co-founder of Twitch / Justin.tv and partner at Y Combinator Tom Steyer 1979 Founder and co-senior-managing-partner of Farallon Capital...

Good met as Rhodes Scholars. 1000Memories was originally funded by Y Combinator, and has received $2.5 million in funding from Greylock Partners. Additional...

updates for query results to applications. Initially seed funded by Y Combinator in June 2009, the company announced in October 2016 that it had been unable...

disabilities, and people recovering from addiction. Notable investors include Y Combinator, Khosla Ventures, QED Investors, Mitch Kapor, Alexis Ohanian, Eric Ries...

(Germany), New York (US), and Amsterdam (Netherlands). Admitted to Y Combinator in 2021, the company specializes in embedded connectivity, enabling global...

Zynga, and Emmett Shear of Twitch, among others. They were a part of Y-Combinator's Summer 2015 class. On December 7, 2015, Gigster announced its $10m Series...

Vogt at Cruise Automation in 2014 after the company participated in Y-Combinator, a startup accelerator that mentors up-and-coming entrepreneurs. Cruise...

Novek founded Seeing Interactive in 2010. Backed by seed accelerator Y-Combinator, the company launched as a service for local newspaper, TV, and Radio...

tablet, or smartphone. Double Robotics received seed funding from Y Combinator. Johnson & Johnson and The Coca-Cola Company are testing Double and seven...

comment platform. Once off the ground they applied and got accepted to Y Combinator, a startup incubator, and with that footing were able to secure more meetings...

journal was established in March 2017 by Google, OpenAI, DeepMind, and Y Combinator Research. The editors-in-chief were Shan Carter (Google Brain), Chris...

2011 by stepbrothers Sasha Orloff and Jake Rosenberg and incubated at Y Combinator. The company positioned itself as a "socially responsible lender" and...

and Mehul Nariyawala, the company received early-stage funding from Y Combinator and was acquired by Google in October 2013. The company's first product...

Policy from Harvard University in 2005. Selkoe is also an alumnus of Y Combinator. In 2000, at the age of 25, Selkoe founded Karmaloop from his parents'...

multi-satellite payload. Astranis was part of the Winter 2016 cohort of the Y Combinator accelerator program and has raised over $350 million in venture funding...

Foundation and the Effective Altruism Meta Fund. It received $50,000 from Y Combinator in 2015. Applied ethics Effective altruism GiveWell "Our Mission and History"...

Coub is a Russian video streaming platform available on the web, iOS and Android. It allows users to create and share looped audio-visual collages up to...

and Pete Koomen, both formerly of Google. Optimizely completed the Y Combinator seed accelerator program in the winter of 2010. In November 2010, Optimizely...

Droege. Scale was founded in 2016 by Alexandr Wang and Lucy Guo through Y Combinator. The pair had worked together at Quora. Initial investors of Scale included...

million in seed funding in September 2011, having participated in the Y Combinator startup incubator program. The company was based in the Old Street Roundabout...

Harcourt, Benin, Oyo, and Accra. In January 2017, Tizeti was accepted into Y Combinator and received a $120,000 on investment as part of the Winter Batch. In...

and JavaScript to buy and store cryptocoins. In 2012, he entered the Y Combinator startup accelerator and received a $150,000 investment, which he used...

first year. During Swartz's first year at Stanford, he applied to Y Combinator's first Summer Founders Program, proposing to work on a startup called...

of Yahoo!, Bloomspot). The company joined the Spring 2012 cohort of Y Combinator. Fullstack Academy began enrolling students in 2013. In 2019, Fullstack...

was led by Kleiner Perkins, with participation from Guillermo Rauch, Y Combinator, and others. On December 2, 2025, Jarred Sumner, creator of Bun, announced...

technology and theoretical physics. In 2007, he founded CO2Stats, a Y Combinator-funded company that measured the carbon dioxide emissions associated with...

Retrieved October 22, 2014. "TOML, Tom's Own Markup Language". Y Combinator Link. Y Combinator. Archived from the original on June 9, 2017. Retrieved May 10...

accepted into Y Combinator in June 2016. The mission was updated to reflect a new goal of 100% voter turnout. During the Y Combinator demo day, Cleaver...

Schelling's Dynamic Models of Segregation. In May 2016, eleVR joined Y Combinator Research (YCR) as part of the Human Advancement Research Community (HARC)...

start-up based in Mountain View, California. Apigy was a graduate of the Y Combinator start-up accelerator. Multiple models of Lockitron were manufactured,...

websites and became one of the first Nigerian startups accepted into Y Combinator. The company was acquired by Stripe for $200 million in 2020. On April...

seed round, the company raised $2.5 million from investors including Y-Combinator, HOF Capital, and Soma Capital. The company began with AI-powered content...

the January 2009 winter training session of his startup incubator, Y Combinator, which provided them with training and $20,000 in funding in exchange...

from 500Startups, Mike Butcher from TechCrunch, Jared Friedman from Y Combinator and H.E John Casson. "Cairo to Attract 5,000 Investors and Entrepreneurs...

Illinois: Wolfram Media. ISBN 978-1-57955-076-9. Stephen Wolfram (2021). Combinators: A Centennial View. Champaign, Illinois: Wolfram Media. ISBN 978-1-57955-043-1...

In 2026, Srinivasan invested in Objection.ai. In 2013, in a talk at Y Combinator's Startup School titled "Silicon Valley's Ultimate Exit" and in a Wired...

Councilor from the 2nd district (2005–2014) Individuals Garry Tan, CEO of Y Combinator Newspapers and publications San Francisco Chronicle Renia Webb Individuals...

"Chaldal.com makes Y Combinator's Top Ten List". The Daily Star. 2016-01-18. Retrieved 8 July 2018. "Chaldal ranks 9th on Y Combinator survey". Dhaka Tribune...

2017-11-17. "Hosain Rahman on the "Defibrillator Experiences" of Jawbone". Y Combinator. Retrieved 2017-11-17. "Compostable Packaging Company TIPA Raises $11...

This anonymous recursion can be produced generically via fixed-point combinators. Anonymous recursion is primarily of use in allowing recursion for anonymous...

The project was one of two selected for investment in March 2019 by Y Combinator, a prominent Silicon Valley business incubator, after requesting proposals...

language to each other via videotelephony. Verbling was financed by Y Combinator in the summer of 2011. It launched in July 2011. In 2012, the company...

systems Anonymous recursion Evaluation strategy Explicit substitution SKI combinator calculus Unlambda Currying Caml Cousineau G., Curien P.-L., Mauny M. The...

Officer) and John Obirije (Chief Technology Officer). The company joined Y Combinator's Summer 2020 batch, becoming one of the few African-founded startups accepted...

research. Entrepreneurs First differs from other accelerators such as Y Combinator and Wayra in that it works with individuals rather than companies. However...

2019, Monzo raised £113 million in a Series F funding round led by Y Combinator's Continuity fund. This round gave Monzo a valuation of £2 billion. In...

and unconditional cash transfers. She is a principal investigator on Y Combinator Research’s basic income study. She is considered an expert on evidence...

about visa processes to companies. Deel launched after entering the Y Combinator startup accelerator in 2019. The company then raised several rounds of...

a web-based outliner created by Mike Turitzin and Jesse Patel at a Y Combinator startup camp. The idea for Workflowy arose from Patel’s prior work experience...

where λx.λy.λz.N is abbreviated as λxyz.N, as well as the two standard combinators, I ≡ λ x . x {\displaystyle I\equiv \lambda x.x} and K ≡ λ x y . x {\displaystyle...

NewsBlur is an American software company based in New York City and San Francisco. NewsBlur is an open-source RSS reader that allows users to subscribe...

states; similarly, from the combinatory logic point of view, there is no K-combinator which can destroy states. From the lambda calculus point of view, a variable...

venture firms including Andreessen Horowitz, Benchmark, Sequoia, and Y Combinator. Across ~45 funds, the firm focuses on fundraising directly from individuals...

Kokorich and Lev Khasis. The company gained early venture backing through Y Combinator and Prime Movers Lab based on its concept of a "space tug" that would...

2021. In 2014, Ginkgo was the first biotechnology company to join the Y Combinator start-up accelerator program. On 16 December 2020, it was reported that...

including Y Combinator, MassChallenge, and Forward Partners. In September 2016, Sam Altman, president of Y Combinator, wrote on the Y Combinator blog: "Many...

Khaled Hussein launched the platform under the name Crowdtilt out of Y Combinator. The company was legally certified in securing fundraisers for non-profit...

000 in funding from the Horn Program Venture Development Center and Y Combinator. LendEDU later moved its headquarters to Hoboken, New Jersey. As of November...

only a week. TenthBit, the company producing Couple, is part of the Y Combinator startup incubator. On February 2, 2013, TenthBit announced that it had...

manage and access. Summon was selected to participate in the Winter 2012 Y Combinator meet. Summon received funding in 2012 from venture capital and angel investors...

handlers with an asynchronous action's eventual result. JavaScript supplies combinator methods, which allow developers to combine multiple JavaScript promises...

all smartphones. Socialcam participated in the Winter 2012 class of Y Combinator and raised funding from a large list of Silicon Valley and Hollywood angel...

Technology Officer Halbert Nakagawa. It was among the participants in Y Combinator's Winter 2008 Accelerator program for startups. The company got its start...

Entrepreneurship. After graduation, Phoenix started a company through the Y Combinator program, and later joined venture capital firm Founders Fund as Entrepreneur...

Incline Village, Nevada The Brandery Cincinnati, Ohio The Founder Institute Palo Alto University City Science Center Philadelphia Y Combinator San Francisco...

startups, in contrast to the fixed stakes taken by accelerators such as Y Combinator, which "typically takes a fixed 7%" equity stake. Rafieyan, Darius (2024)...

Matus and architect Newsha Ghaeli. In 2018, Biobot began working with Y Combinator and was awarded their first contract by the city of Cary, North Carolina...

his wife and co-founder, Natalie Downe. They received funding from Y Combinator in early 2011. In 2013, Lanyrd was acquired by Eventbrite with Simon and...

generated All No Free, BSD P3 Earley–combinators BNF-like OCaml Mixed external, or scannerless All No ? P4 Earley–combinators, infinitary CFGs BNF-like OCaml...

each of the start‑up program participants selected by the incubator Y Combinator. In February 2014, it was announced that Milner had led a round of funding...

Andrew Miklas, and Baskar Puvanathasan. The company was incubated at Y Combinator. In July 2016, the former CEO of Keynote Systems, Jennifer Tejada, was...

26, 2020. Retrieved April 10, 2020. Novet, Jordan (July 9, 2015). "Y Combinator-backed GitHub competitor GitLab raises $1.5M". VentureBeat. Archived from...

Stripe, Inc. is an American multinational financial services and software as a service (SaaS) company dual-headquartered in South San Francisco, California...

People in Business" in 2015. The company's seed-stage investors include Y-Combinator, Sam Altman, Paul Buchheit and 500 Startups. In May 2015, PlanGrid raised...

joined Y Combinator as a member of the Winter 2016 class. Later that year and in 2017, msg.ai completed two rounds of seed funding led by Y Combinator and...

company, which develops self-driving car technology, participated in Y Combinator, a startup accelerator. In March 2016, General Motors acquired Cruise...

one can provide fixed ad hoc cases for specific data types, an ad hoc combinator is absent". Rank polymorphism is one of the defining features of the array...

to San Francisco to network. After applying to the startup incubator Y Combinator in 2019, he continued contacting venture funders, who introduced him to...

co-founded by Edwin Olson, Alisyn Malek, and Steve Vozar. It was part of the Y Combinator startup accelerator in 2017. In June 2018, May Mobility launched its first...

which is fully bound and self-contained. It may be either a constant or a combinator where all the subexpressions are supercombinators. Supercombinators are...

available to users aged 13 and older. The company was accepted into Y Combinator's Summer 2021 batch and was renamed to Slash shortly after. The founders...

December 2013, Teespring was accepted into the start-up accelerator Y-Combinator which is based in Mountain View, California. Within two weeks of finishing...

Graça, Sofia Pessanha, Bruno Silva, and Hugo Silva and was incubated by Y Combinator in late 2014. The company was officially launched in March 2014. In May...

Series A funding, led by Base10 Partners, with additional funding from Y Combinator, Core Innovation Capital, and Slow Ventures.[non-primary source needed]...

California, with seed funding from Paul Graham of seed capital firm Y Combinator and Series A funding with Alsop Louie Partners and Draper Associates....

include Magic Johnson Enterprises, Andreessen Horowitz, Kapor Capital, Y Combinator, Omidyar Network, Valar Ventures, and Rothenberg Ventures. The Well is...

Codecademy is an American online interactive platform that offers free coding classes in 13 different programming languages including Python, Java, Go...

Patrick Scaglia is chairman of the Y Combinator Research's project Human Advancement Research Community (HARC). Before that, he was co-director of Foundry@CITRIS...

in 2012 by Matt Riley and Quin Hoxie. The company participated in Y Combinator’s incubator program and received investment from a number of prominent...

up 14% year-over-year. In February 2015, Twilio acquired Authy, a Y Combinator–backed startup that offers two-factor authentication services to end users...

in addition to the $315,000 in funding it had raised previously from Y Combinator and True Ventures. On July 5, 2011 BackType announced that it had been...

park, Insight Park. It has been funded by Rebel Venture Capital and Y Combinator. Initial capital was $120,000 in exchange for 7% equity. Dress owners...

Ilya Sukhar, James Yu, and Kevin Lacker, previously at Google and Y Combinator. The firm produces back-end tools for mobile developers that help mobile...

with two Stanford engineers to start the company, which was funded by Y Combinator in 2011. Groupon acquired the business in January 2013. In 2014, Woo co-founded...

Ben Silbermann (born July 14, 1982) is an American Internet entrepreneur. He is the co-founder and executive chairman of Pinterest, a visual discovery...

combination where Ma and Miller brought their entrepreneurial savvy and Y Combinator connections, while Montana contributed a feel for business with an unmatched...

Experiment, formerly called Microryza, is a US website for crowdfunding science-based research projects. Researchers can post their research projects to...

co-founders Jeff Lowe, Matthew McDonald, and Brad Siegler were accepted into Y Combinator for the Winter 2015 batch. In 2023, EquipmentShare closed a $3 billion...

shifting focus from digital startups towards deep tech ventures. In 2016 Y Combinator's batch there were 32 deep tech startups including 9 in biotech, 4 in drones...

USA, Mountain View, California July 19, 2007 — Blake Ross, Joe Hewitt Y Combinator, Sequoia Capital Facebook Mobile 3 ConnectU USA, Cambridge, Massachusetts...

foldr f v Also, in a lazy language with infinite lists, a fixed point combinator can be implemented via fold, proving that iterations can be reduced to...

infinitary lambda calculus, as co-author of TeReSe and for his fixed point combinator Yk = (L L L L L L L L L L L L L L L L L L L L L L L L L L) where L =...

based in SoHo, in New York City. The company received seed funding from Y Combinator during its early days as a startup. The website was listed on Time magazine's...

year, they participated in the Y Combinator program and finished top of the class (W14). After graduating from Y Combinator they raised a $4.5M seed round...

successfully took his idea through the Y Combinator business incubator program, and unusually for a startup company at Y Combinator, Migicovsky's business actually...

§ Indentation Prettyprint Hutton, G. (December 6, 2012). "Parsing Using Combinators". In Davis, Kei; Hughes, John (eds.). Functional Programming: Proceedings...

participated in the startup accelerator Y Combinator, receiving funding and strategic support. Y Combinator lists "cellular agriculture and clean meat"...

of sites". The Register. Archived from the original on 2012-02-10. "Y Combinator comments on the issue". 2011-09-20. Archived from the original on 2012-03-31...

first market offering, Da Vinci, and subsequently participated in Y Combinator's Winter 2020 batch. In August 2021, H1 acquired Portland, Oregon startup...

was that information on the internet needed to be free. As part of Y Combinator's summer 2016 batch, the site originally launched in Chicago in January...

Replit (/ˈrɛplɪt/), formerly Repl.it, is an American technology company. Founded in 2016, Replit developed an online integrated development environment...

highlighting/drawing, animations, and other tools. Kamcord began as a Y-Combinator backed startup in the summer of 2012. It was founded by Aditya Rathnam...

Health was accepted to a startup accelerator in Silicon Valley called Y Combinator and has appeared on number of mainstream media publications such as TechCrunch...

Following the 500 Startups accelerator program, 9gag participated in Y Combinator's incubator and its user-base increased to 70 million global unique visitors...

(mathematics) – Element mapped to itself by a mathematical function Fixed-point combinator – Higher-order function Y for which Y f = f (Y f) Fourth wall – Separation...

argument; return and bind are equivalent to the K and S combinators, respectively, in the SKI combinator calculus. A state monad allows a programmer to attach...

an editor. In September 2024, Politico announced a partnership with Y Combinator-backed startup Capital AI to produce an AI tool to summarize its journalism...

Earth-observation data.[citation needed] In September 2024, venture capital company Y Combinator-backed Starcloud released a white paper detailing plans to build multiple...

medical care. Watsi was the first nonprofit funded by seed accelerator Y Combinator. They have also been funded by the Draper Richards Kaplan Foundation....

accepted to Y Combinator. It was acquired by Trulia one year later. Wu then worked at Trulia for two years. Around then, fellow Y Combinator peer Keith Rabois...

Yahoo! and became Yahoo! Stores; Lisp programmer, author, founder of Y-Combinator Leroy Grumman (B.S. 1916 mechanical engineering) – founder of Grumman...

investors include Goldman Sachs, the International Finance Corporation, and Y Combinator. In 2023, Ozor was appointed Commissioner for Transportation in Enugu...

and innovation. Paul Graham, the founder of venture capital company Y Combinator opposed the bill, and banned all SOPA-supporting companies from their...

were made optional for users playing for fun. The site was backed by Y Combinator in 2015. The website kickback.com launched on February 2, 2015, in San...

some internal projects at Graham's startup business incubator named Y Combinator have been written in Arc, most notably the Hacker News web forum and news...

first weeks of operation. In March 2021, Ontop was accepted into the Y Combinator W21 batch and secured US$4.5 million during Demo Day in May 2021. In October...

')\to \tau \to \tau ''} (the S-combinator). These are the typed lambda calculus representations of the basic combinators of combinatory logic. Each type...

GOAT is an American online platform offering sneakers, streetwear, luxury apparel and accessories through the primary and resale markets. Founded in 2015...

source needed] Russell, Melia. Inside the Engine Accelerator, the anti-Y Combinator for 'tough tech' startups. Business Insider. August 16, 2024. The Engine...

Ottawa". Retrieved 2025-10-29. Schonfeld, Erick (2011-04-25). "Another Y Combinator Win: WuFoo Exits For $35 Million, After Raising Only $118,000". TechCrunch...

artificial intelligence startup that had previously participated in Y Combinator's accelerator program. Kauffman had left RunRL by the time of the march...

\lambda } -calculus, but also important differences exist (e.g. fixed point combinator Y has normal form in combinatory logic but not in λ {\displaystyle \lambda...

was founded by Kamel Founadi, Hykes, and Sebastien Pahl during the Y Combinator Summer 2010 startup incubator group and launched in 2011, and renamed...

and a group of other Harvard students received startup funding from Y Combinator for their company TBD, later renamed Memamp. "I just wanted to design...

"conservative Republican Christian", was previously removed from the Y Combinator alumni network in 2016 because of harassment concerns, starting when he...

Listia originally received funding of $15,000 from startup funding firm Y Combinator. Listia was launched on August 6, 2009. In October 2009, Listia received...

tracking. Petersen and Flexport were accepted into the startup accelerator Y Combinator in 2014. As of 2022, the company had a $8 billion valuation. In 2021,...

the Recurse Center as a Research Fellow for a year. He then joined Y Combinator Research as a Research Fellow from 2016 to 2019. In 2019, Nielsen collaborated...

investors such as Alexis Ohanian, and Garry Tan and Michael Birch from Y Combinator, Dattch was renamed to Her. In May 2025, Her was acquired by Match Group...

prison system. His business venture was accepted in the incubators Y Combinator and NewMe. The enterprise was cofounded in 2013 with Alfonzo Brooks, whom...

SingleStore (formerly MemSQL) is a distributed, relational, SQL database management system (RDBMS) that features ANSI SQL support, designed to handle data...

University of Science and Technology Paul Graham (SM '88, PhD '90) - Y Combinator cofounder, introduced the Blub paradox Jesse Grupper (born 1997) - Olympic...

Atherton founded Zyper, initially through an incubator program called Y Combinator. Zyper was focused on facilitating advertising through fans of a product...

Firebase was a company that developed backend software. It was founded in San Francisco in 2011 and was incorporated in Delaware. In 2014, Firebase was...

CNN. Retrieved February 22, 2025. Bort, Julie (March 13, 2025). "Y Combinator's police surveillance darling Flock Safety raises $275M at $7.5B valuation"...

Snapchat), Alexis Ohanian (co-founder of Reddit), Sam Altman (president of Y Combinator) and Chris De Wolfe (founder of Myspace). The Associated Students UCLA...

Software and Conformance". slideshare.net. "Members". dashif.org. "Y Combinator-backed bitcodin turns your films into netflix-quality video". venturebeat...

a "Series A" round led by Benchmark, with 8VC, Accel, SV Angel, and Y Combinator as participants. The platform then offered 70 certified connectors and...

researcher at Paris Diderot University, developed a calculus of categorical combinators and linked it to lambda calculus, which led to the definition of the...

January 2020. Pocket Worlds participated in the Summer 2018 batch of Y Combinator. In January 2021, Bitkraft Ventures led the company's Series A funding...

Norman, and Greg Belote in 2012.[citation needed] The startup incubator Y Combinator backed Wefunder during its development and launch. Wefunder is predicated...

2025, it acquired rehook.ai, a loyalty program tech startup backed by Y Combinator, for an undisclosed amount. The company secured seed funding of USD$1...

Cofactor Genomics is a biotech company that primarily focuses on drug development, medical research, and personalized medicine. Cofactor Genomics was founded...

and UCLA, respectively, to start their company. While incubated. by Y Combinator, MakeGamesWithUs offered computer science summer camps for high school...

company A Plus with Ashton Kutcher. Beard was an early participant in the Y Combinator accelerator. He has been named to Forbes's "30 Under 30" list, which the...

"Реальная история великого комбинатора" [The real story of the great combinator] (in Russian). Archived from the original on 9 May 2017. Retrieved 14...

February 2016, Life360 acquired the private messaging application and Y Combinator grad "Couple" based in Mountain View, California. At CES in January 2018...

Anne E. Wojcicki (/wuːˈtʃɪtski/ woo-CHITS-kee; born July 28, 1973) is an American entrepreneur who co-founded the personal genomics company 23andMe. Wojcicki...

company in 2012 after a falling out with Sha. In 2012, he joined the Y Combinator program, taking on Laks Srini from SigFig as co-founder of a new company...

San Francisco and raised venture capital from Sequoia Capital, Accel, Y Combinator, and a handful of individual investors. In March 2018, Dropbox launched...

Bentley, Kevin (16 April 2024). "Descent 3 Source Code". Hacker News. Y Combinator. Archived from the original on 16 April 2024. Retrieved 16 April 2024...

The company began operations in 2017 and was incubated and funded by Y Combinator. Initially, WiFi Dabba operated as an ISP aggregator, offering inexpensive...

2022, Azuki received a $500,000 investment from Y Combinator, and officially joined the Y Combinator W22 batch. In May 2022, Azuki announced that the company...

was banned from attending Y Combinator's Demo Day. According to a post on Hacker News by then-president of Y Combinator Sam Altman, the decision to exclude...

was asked to step down. In 2018, startup company Nectome, backed by Y Combinator, proposed a controversial preservation service using aldehyde-stabilized...

MD FA - Doximity". "Paul A. Sobotka - U.S. News". "V-Flow Medical - Y Combinator". Azizi, Michel; Schmieder, Roland E.; Mahfoud, Felix; Weber, Michael...

storage, file management, and sharing, and Crocodoc. In June 2014, the Y Combinator-backed company Streem was acquired for an undisclosed amount. Later that...

overall quality of content. Startup accelerator and angel investor Y Combinator co-founder Paul Graham, on a page of "Startup Ideas We'd Like to Fund"...

they could compete with other angels, venture capitalists, and the Y Combinator business incubator for the limited pool of worthy investment opportunities...

The company was accepted into its first Y Combinator program in Fall 2017. It became part of Y Combinator's Winter 2018 batch. Sheerly Genius Pantyhose ...

part of Factor. Other important language features such as tuple classes, combinator inlining, macros, user-defined parsing words and the modern vocabulary...

on social media engagement in the music industry to hanging out with Y Combinator associates." Seriki teased that he was working on something bigger than...

Taylor Wakefield. In 2011, Mailgun Technologies, Inc. was selected for Y Combinator's 2011 class, facilitating the company’s product and growth with early...

Archived from the original on 16 August 2021. Retrieved 21 March 2018. "Y Combinator's Xerox Alto: restoring the legendary 1970s GUI computer". arstechnica...

differentiates itself from other accelerators in Silicon Valley, such as Y Combinator, in that it is an educational non-profit 501(c)(3) organization that takes...

billion, making Flutterwave a unicorn. Investors in Flutterwave include Y-Combinator, Visa Ventures, Mastercard, Avenir Growth Capital, and Tiger Global Management...

benefits Avant by diversifying funding sources. After graduating from the Y Combinator startup program in 2012, Sun and Zhang looked to build their business...

October 2020). "Here's an exclusive look at the pitch deck a 23-year-old Y Combinator alum used to raise $1 million for ethical bank cards". Business Insider...

Recasts itself as Cue a Personal Assistant App". All Things D. "Cue". Y Combinator. Retrieved 2024-05-26. Gordon, Whiston (21 June 2021). "Cue Turns Your...

language), a programming language for scripts run on a web server Parser combinator, (computer programming) a higher-order function that accepts several parsers...

seed funding round of about $2.1 million following participation in Y Combinator and TechCrunch Startup Battlefield. The round was reported to have been...

Armstrong, the co-founder of crypto-currency exchange Coinbase, applied to Y Combinator's summer class. They proposed a payment platform for bitcoin where users...

introduces the replaceAll method for strings; Promise.any, a promise combinator that short-circuits when an input value is fulfilled; AggregateError,...

Forever Labs was invited to participate in the Silicon Valley Incubator Y Combinator. Forever Labs contracts with licensed physicians to perform the collection...

England, station code SKI Skikda Airport, Algeria, IATA code SKI SKI combinator calculus, a combinatory logic system and a computational system SKI protein...

was among the early biotechnology startups to receive funding from Y Combinator, and was a recipient of the California Life Science Institute's FAST Award...

custom-made packaging. The service was funded by seed capital firm Y Combinator. Lumi's platform was inspired by the challenges the company had faced...

1990 - actor Ali Rowghani, 1991 - managing partner, YC Continuity at Y Combinator; former chief financial officer at Pixar and former chief operating officer...

following are some examples: The term λx. λy. x, sometimes called the K combinator, is written as λ λ 2 with de Bruijn indices. The binder for the occurrence...

Rap Genius applied to start-up incubator Y Combinator, and "became the fastest-growing start-up in Y Combinator history", obtaining $1.8 million in seed...

style factorial = foldr (*) 1 . enumFromTo 1 Using Haskell's Fixed-point combinator allows this function to be written without any explicit recursion. import...

Okara, Pakistan. In 2015, the couple moved to Mountain View as part of Y Combinator's accelerator program. They were inspired by the challenges that most people...

the first seven non-profits funded by seed accelerator Y Combinator. In March 2014, Y Combinator partner Paul Buchheit donated $100k in a bid to further...

would have allowed Pinboard to become a Y Combinator Fellow. In light of his frequent criticism of Y Combinator, he humorously described his entry as "a...

Bartik, and Elizabeth Rhodes, Miller is a principal investigator on Y Combinator's universal basic income experiment, in which unconditional cash transfers...

Asparouhov dropped out of MIT to develop his startup Nightingale with Y Combinator. He was head of growth of Teespring. He is a recipient of the Thiel Fellowship...

Pharma and Spring Discovery, as well as a part-time contributor at Y Combinator. In 2020, Betts-LaCroix cofounded Retro Biosciences, which emerged out...

has authored many of the company's patents. Momentus became one of Y Combinator's most successful alumni, winning NASA iTech Prize in 2019. Momentus raised...

Computer programming portal Diagonal lemma Droste effect Fixed point combinator Self-modifying code Self-interpreter Self-replicating machine Self-replication...

and network systems; recursive functions; nested recursive functions; combinators; tag systems; register machines; and reversal-addition. For a program...

2007, Prague. Frost, R., Hafiz, R. and Callaghan, P. (2008) " Parser Combinators for Ambiguous Left-Recursive Grammars." 10th International Symposium...

November 1, 2012. Robert Greene. The Aha! Moments That Made Paul Grahms Y Combinator Possible. Fast Company. November 12, 2012. 'Mastery' By Robert Greene:...

its first satellite in March 2025. 2021: Albedo was founded through Y Combinator and raised $10 million in seed funding led by Initialized Capital. It...

"Podium: An interaction and payments platform for local businesses". Y Combinator. Retrieved 2022-10-05. "Podium helps businesses improve online reviews...

blog post. In December 2013, AirPair was accepted into the Winter 2014 Y Combinator batch. In March 2014, AirPair announced it would launch partnerships with...

of Motor Vehicles in June 2015. After it successfully graduated from Y Combinator, a startup accelerator that mentors up-and-coming entrepreneurs, Cruise...

and Founder, Zage, shut down after having previously participated in Y-Combinator's Summer 2021 cohort. In August 2015, he established an exhibit housing...

companies. In 2005, a new Accelerator investment model was introduced by Y Combinator that combined fixed terms investment model with fixed period intense bootcamp...

streaming career. In April 2020, Park announced that he was joining the Y Combinator-backed startup Zelos as the Head of Product. In November 2020, Park joined...

founded with the aid of Silicon Valley accelerator Y Combinator include Pebble and Bufferbox. Y Combinator founder Paul Graham and president Sam Altman have...

innovative, focused and always learning." Ellis and Noone were also part of Y Combinator in their 2016 cohort. Relativity Space announced its US$650 million Series...

Yung Ahn; Sheard, Tim (2011). "A hierarchy of mendler style recursion combinators: taming inductive datatypes with negative occurrences". Proceedings of...

where axiom 1 corresponds to the K combinator, and axiom 2 corresponds to the S combinator. Note that the I combinator corresponds to the theorem schema...

doorsteps every morning. The company expanded rapidly, joining the Y Combinator accelerator in 2019. It has since grown into a leading quick-commerce...

aged 30 and under" by Business Week, and Dropbox has been touted as Y Combinator's most successful investment to date. Houston was also named among the...

'Super Mario 64 was built with a system written in Lisp'". Hacker News. Y Combinator. Archived from the original on April 27, 2011. Retrieved March 8, 2022...

representative and his mayoral predecessor Sam Liccardo and public support from Y Combinator CEO Garry Tan, Kraken co-CEO Arjun Sethi, and Founders Fund CMO Mike Solana...

Volunteers international charitable organization. As an alumnus of Y Combinator and mentor with 500 Startups & PIE PDX, Monsef is an active participant...

requiring a background in science. A couple notable interviews with Y Combinator, one of their investors, detailed an unconventional business model in...

campaign that raised $194,444. Also in 2013, Meta was accepted into the Y Combinator's seed accelerator program. Steve Mann became the company's chief scientist...

funding from Y Combinator in March 2010, but began operations in 2012. Paul Graham said Homejoy was the fastest growing Y Combinator company. The company...

graph reduction machine is a special-purpose computer built to perform combinator calculations by graph reduction. Examples include the SKIM ("S-K-I machine")...

like BackerKit that principally offer data analysis of campaigns, or Y Combinator, which acts as a startup accelerator and receives a significant number...

Deep tech Deep tech venture Business incubator Startup accelerator Y Combinator (company) Techstars 500 Startups Lomas, N., "Europe-based hardware accelerator...

the company raised $1.5 million at a $20 million valuation through Y Combinator. In 2024, The Ankler signed a radio deal with NPR's LAist. Rushfield was...

S2CID 207205045. Retrieved 11 December 2018. Ha, Anthony (2012-05-08). "Y Combinator-Backed Swiftype Builds Site Search That Doesn't Suck". TechCrunch. Archived...

a portable GUI tool kit, an object serializer/deserializer, a parser combinator library, a regular expression package, core libraries for collections...

Simón Borrero, Felipe Villamarín, and Sebastián Mejía. Rappi entered Y Combinator's Winter 2016 batch, generating additional investment. In August 2018,...

virgin margaritas of cryptocurrency "We Are the App Store". Hacker News. Y Combinator. Retrieved 29 November 2013. Martin Adolph of ITU’s Telecommunication...

2020. Wintermeyer, Lawrence (18 November 2025), "Obex Set To Be The Y-Combinator For Stablecoin Startups With $2.5 Billion Mandate", www.forbes.com, Forbes...

States, as well in a further 180 countries. ClassDojo is an alum of Y Combinator's Ed-tech division, and was launched in August 2011 by Sam Chaudhary and...

Playground Global, Social Capital, Tiger Global, Tribe Capital, and Y Combinator among others. In March 2025, former Google CEO Eric Schmidt replaced Ellis...

coverage over a hash's keyspace. These modes are: Brute-force attack Combinator attack Dictionary attack Fingerprint attack Hybrid attack Mask attack...

Goldcrest Capital, Eniac Ventures, Two Sigma Ventures, Khosla Ventures, Y Combinator, and Capital Factory. Mio raised a further $8.7m in December 2021. Chu...

small-but-influential tech website hosted by Y Combinator, Hacker News, banned stories from Valleywag. Y Combinator founder Paul Graham wrote "Several users...

Malik founded Innov8 Coworking in 2015. The company was accepted into Y Combinator's Summer 2016 batch. Its first location, a 105-seat facility in Connaught...

and regulated environments. Gravitational was a member of the 2015 Y Combinator cohort, and Teleport was originally released in June 2016. Teleport was...

Walter. "The Fortran I used for Empire was FORTRAN-10". Hacker News. Y Combinator. Retrieved 29 February 2020. Katz, Arnie (November 1988). "Empire". Ahoy...

States Department of Homeland Security Secretary May 17, 2024 Garry Tan Y Combinator President and CEO May 22, 2024 Robin Vince BNY President and CEO July...

both Mercury, and in Applied Intuition, the latest company of former Y Combinator COO Qasar Younis. In 2023, 2024, and 2026, he participated in the 69th...

to expand to North Africa after raising $170m". The Africa Report. "Y Combinator, VCs, Endeavor: How global investors boosted Flutterwave's appeal". TechCabal...

July 2025. Retrieved 6 July 2025. "This new collective wants to be the Y Combinator of the Caribbean". People of Color in Tech. 2 July 2025. Retrieved 6 July...

structure calculations of solids and molecules Parsec (parser), a Parser combinator library for Haskell Parsec (software), a desktop capturing application...

2018-09-19. "[S1,E7] Raising over $1M on Kickstarter, graduating from Y Combinator and being married to a co-founder — Lisa Fetterman, CEO of Nomiku". Valley...

Heroku is a cloud platform as a service (PaaS) supporting several programming languages. As one of the first cloud platforms, Heroku has been in development...

Located in San Francisco, CA, the company received seed funding from Y Combinator which allowed them to launch their first product, the WakeMate. Competing...

"getting your fix", taking addictive drugs (from the 1960s) Fixed point combinator, in mathematics All pages with titles beginning with Fix All pages with...

2014 the co-founders moved to San Francisco after being accepted to Y Combinator Winter 2015 program in Silicon Valley, becoming the first company targeting...

engineer working for Airbnb. Using seed money from startup accelerator Y Combinator, Nathoo and company created the platform's website in 2016; the first...

glasses now available for pre-order, does what Glass can't". Y Combinator. "Y Combinator Summer 2013 Demo Day, Batch 2: Meet Meta, Lob, Amulyte, Weilos...

People.ai, and Snov.[citation needed] In April 2021 Awesomic joined Y Combinator and raised $125,000. That year he was named to Forbes Ukraine's 30 Under...

Oxford, which is studying global development. In 2019, he worked with Y Combinator on Our World in Data. Our World in Data presents articles, datasets, and...

digital platforms. Investors include Reddit co-founder Alexis Ohanian, Y Combinator partner Garry Tan, Delicious founder Joshua Schachter, Hipmunk founder...

Start-Up Chile. In 2013, Padlet was additionally backed by accelerators Y Combinator and ImagineK12. As of November 2020, the company has raised over $13 million...

targets the "-1 to 0" phase, distinguishing itself from accelerators like Y Combinator which typically invest in teams that have already established an idea...

Friedman, former GitHub CEO and investor. Daniel Gross, partner at Y Combinator. California Forever has stated that its investors are not involved in...

INCUBATOR CIIE.CO i-Hub Seed Camp Entrepreneur First Founders Institute Y Combinator TechStars 500 Startups Technium Technology Hub Technology transfer "Technology...

Petcube raised over $14 million in seed money and Series A financing from Y Combinator, Almaz Capital, Aventures, and other investors. Petcube offers three devices:...

science program. Following Mah's graduation, she and Su applied to Y Combinator's summer program, and after presenting their idea formally to investors...

Kia (2016-08-23). "Quora's Co-Founder Is Back In the Startup Game at Y Combinator". Fortune. Retrieved 2017-04-06. TechCrunch: Quora Co-Founder Charlie...

incubator in New York City before moving to Silicon Valley to join Y Combinator. Nusimow, a computer engineer, created the program with the intention...

Powered By Your Professional World" "Stanford Students Build Their Own Y Combinator". Tech Crunch. 10 June 2010. Retrieved 11 September 2013. "Pulse: Why...

{lift-choice} [V]=\operatorname {none} } For example, For example, the Y combinator, λ f . ( λ x . f   ( x   x ) )   ( λ x . f   ( x   x ) ) {\displaystyle...

passion for wine and technology. In January 2016, the company joined Y Combinator's accelerator program and started shipping wines to their members. With...

needs and stage of development. AlphaLab follows a similar structure to Y Combinator. The accelerator is a subsidiary of Innovation Works, which receives funding...

startups by Accelerate Africa, an accelerator program striving to be the Y Combinator of Africa. Google also selected CDIAL for its Cohort 8 Africa accelerator...

Techcrunch.com. Retrieved 14 April 2022. "Norrsken Foundation launches 'Y Combinator for impact'". Sifted.com. Retrieved 19 January 2024. "Norrsken VC closes...

company received £1.5 million in funding from investors, including Y Combinator, Google Ventures, Salesforce and Accel Partners. In 2013, GoCardless launched...

Chernavsky (born 1947), a Russian-American producer, composer and songwriter Y Combinator, a seed-stage startup funding firm Yale College, the liberal arts college...

available, but can instead be expressed with a fixed point combinator. However, the fixpoint combinator cannot be formulated in a typed version of the lambda...

announced that in 2025, the United States Army has partnered with Y Combinator to bring in small companies to the conference and host a pitch-style competition...

money. This hurt the reputation of cryonics in the U.S. In 2018, a Y-Combinator startup called Nectome was recognized for developing a method of preserving...

used memoization to reduce the exponential time complexity of parser combinators, describing the result as a memoizing purely functional top-down backtracking...

according to biographer Ashlee Vance. At a Vanity Fair event with Y Combinator president Sam Altman in 2015, Musk said he was "involved in politics as...

for businesses based in the United States. ZenPayroll was part of Y Combinator's Winter 2012 batch. The company raised $6.1 million from investors including...

switch between the Classic and Praos versions of Cardano using a hard fork combinator that preserved the blockchain history;[non-primary source needed] Ouroboros...

including Union Square Ventures, O'Reilly Media's AlphaTech Ventures, Y Combinator and Chris Dixon's Founder Collective. The following January Codecademy...

sharing access to a wireless router. The pair pitched the concept to Y Combinator and were accepted. Inspired by the release of CryptoKitties, the pair...

offline search on mobile phones. Later it was selected to be part of Y Combinator's Winter 2014 class. Starting with two data centers in Europe and the US...

other funders include Netflix founder Reed Hastings, Ravensburger, and Y Combinator. In the fall of 2023, Ello was named one of the top 10 AI products for...

Listings officially launched in February 2015 while participating in the Y Combinator Winter 2015 batch. The company raised a $1M seed round from Soma Capital...

Communications. Retrieved October 30, 2016. "Google Acquires Zenter; Y Combinator Gets Another Payday". TechCrunch. June 19, 2007. Retrieved May 11, 2023...

term of type σ → τ to a term of type σ) λ-abstraction The Y fixed point combinator (making terms of type σ out of terms of type σ → σ) The successor (succ)...

automate Google AdWords selection and bidding. AdGrok was accepted to Y Combinator and was later sold to Twitter for $10 million in May 2011. While AdGrok's...

Startups, Stanford University. Attorney Carolynn Levy, General Counsel at Y Combinator. Springmeyer, Bryan. "Negotiating Restricted Stock Agreements - Preparing...

fintech company to be selected for Y-Combinator in the USA. In 2022, NALA raised $10m backed by Accel Partners, Y-Combinator, Amplo and Bessemer Ventures. Other...

Spiegel, CEO of Snap Inc. Harj Taggar, group partner at Y Combinator Garry Tan, CEO of Y Combinator Kyle Vogt, co-founder of Cruise Automation Chris Wanstrath...

programming semantic allowing fixed point combinatorics, such as the Y combinator, and data types. By 1971, λ-calculus was equipped to define any sequential...

Eva Shang and Christian Haigh, and was part of that year's Summer Y Combinator Demo Day. In November 2017, Forbes Magazine included Legalist's founders...

arbitrary collection of base types, product types (tuples) and a fixed point combinator: data Lam :: * -> * where Lift :: a -> Lam a -- ^ lifted value Pair ::...

Arrington (September 1, 2010). "Reddit Cofounder Alexis Ohanian To Join Y Combinator". Techcrunch.com. Retrieved May 29, 2015. Jeremy Edberg (November 2009)...

WordPress. Retrieved 24 April 2014. Ludwig, Sean (8 February 2013). "Y Combinator-backed Coinbase now selling over $1M Bitcoin per month". VentureBeat....

non-native speakers improve spoken English. The company took part in Y Combinator's Summer 2021 batch and raised an initial pre-seed round of about $605...

company was originally called Submishmash. Submittable was part of Y Combinator in 2012 and raised early funding from 77Ventures, Flywheel Ventures, and...

the extensibility along the dimensions of both data and behavior. New combinators or terms in the DSL can be modularly introduced, as can new interpretations...

a construction of a partial recursive function that implements the Y combinator. A function F {\displaystyle F} such that φ e ≄ φ F ( e ) {\displaystyle...

Agarwal. After leaving graduate school, Morey and Wurzel participated in Y Combinator, the startup accelerator run by Paul Graham and Jessica Livingston. In...

Brezina from Adam's dorm room in Cambridge, Massachusetts, as part of the Y Combinator summer founder's program. In late 2006, it relocated to San Francisco...

former Google product manager, and Omar Ismail. It was accepted into Y Combinator's Summer 2011 class and graduated from the accelerator in early 2012. It...

roughly $15 million. In 2018, it raised $22.7 million in funding led by Y Combinator and Tribe Capital. In 2019, SFOX announced a partnership with M. Y. Safra...

entrepreneurship, created by Paul Graham and run by his startup incubator, Y Combinator. Lemmy, started in February 2019, is a federation of social news sites...

future looks like?". N Magazine. September 2013. Retrieved 2015-05-17. "Y Combinator Backs An All-In-One, Portable Coffee Stand Called Wheelys To Take on Starbucks"...

States with his family from the Soviet Union at the age of five) and Y Combinator president Sam Altman joined the protest at San Francisco airport. There...

first 3 months. In 2012, Minshew, Cavoulacos, and McCreery applied to Y Combinator at the recommendation of their advisor Rachel Sklar. They traveled to...

logic builds on combinators, higher order functions whose domain is another combinator or function, and whose range is yet another combinator. Hence combinatory...

August 2015, Flirtey graduated from the Silicon Valley seed accelerator, Y Combinator. In March 2016, the company flew the first federally sanctioned drone...

Polygon. Retrieved 2024-09-05. Geron, Tomio. "Crowdfunding A Focus At Y Combinator Demo Day". Forbes. Retrieved 2023-04-07. "BackerKit's The Creative Fund...

and heir to the Hyatt Hotel fortune Geoff Ralston 1982 President of Y Combinator; former chief product officer and SVP at Yahoo! Bruce Rauner 1978 Founder...

Shark Tank, Genet was able to finance her company's growth through Y Combinator. As of 2015, the company had over $2.5 million in sales throughout the...

Scholars. Retrieved 2022-05-31. Stross, Randall (2013-09-24). The Launch Pad: Inside Y Combinator. Penguin. p. 15. ISBN 978-1-59184-658-1. Official website...

Viaweb, which they sold to Yahoo! for $45 million. This windfall seeded Y Combinator, making the three among the most influential forces in Silicon Valley...

Times. Retrieved November 18, 2016. Empson, Rip (February 18, 2013). "Y Combinator-Backed Zenefits Gives Small Businesses A One-Stop Shop For Finding And...