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This page lists bugs and glitches with the mathematical formatting system using the math extension, with different preferences (server-side svg/client side svg/client side mathml). See Help:Displaying a formula.

To view all three modes visit Special:Preferences § mw-prefsection-rendering and change the Math setting to SVG (MathML can be enabled via browser plugin). See #Formatting notes, below, for how to add entries.

Math format inconsistencies
Number	LaTex	server-side svg	client side svg	client side mathml	Notes
9 open	`\tbinom{n}{k} \binom{n}{k} {n \choose k}`	${\tbinom {n}{k}}{\binom {n}{k}}{n \choose k}$	${\tbinom {n}{k}}{\binom {n}{k}}{n \choose k}$	$(\binom{n}{k}) (\binom{n}{k}) (\binom{n}{k})$	Text style binomial coefficient uses parentheses that are too big
T434477 new task	`\textstyle \sum_{k=0}^{n-1} \frac{ \binom {n+1}k }{\binom n{k+1} }`	$\textstyle \sum _{k=0}^{n-1}{\frac {\binom {n+1}{k}}{\binom {n}{k+1}}}$	$\textstyle \sum _{k=0}^{n-1}{\frac {\binom {n+1}{k}}{\binom {n}{k+1}}}$	$\sum_{k = 0}^{n - 1} \frac{(\binom{n + 1}{k})}{(\binom{n}{k + 1})}$	Binomial coefficients get hilariously wrongly sized when used from inside a text-style fraction
1 open T434428	`\Gamma \Delta \Theta \Xi \Omicron \Pi \Sigma \Upsilon \Phi \Chi \Psi \Omega`	$\Gamma \Delta \Theta \Xi O\Pi \Sigma \Upsilon \Phi \mathrm {X} \Psi \Omega$	$\Gamma \Delta \Theta \Xi O\Pi \Sigma \Upsilon \Phi \mathrm {X} \Psi \Omega$	$Γ Δ Θ Ξ O Π Σ Υ Φ X Ψ Ω$	uses the wrong symbol – shouldn't be italicized. See mw:Extension:Math/T434428 for full set of typefaces
2 open	`x\pm y`	$x\pm y$	$x\pm y$	$x \pm y$	\pm" has the wrong vertical position (the minus part is below the baseline) – perhaps uses the wrong font
3 open	`1 \backslash 2 / 3`	$1\backslash 2/3$	$1\backslash 2/3$	$1 ∖ 2 / 3$	"\backslash" is the wrong shape and size, doesn't match "/" – again, perhaps the wrong font
4 (maybe T417248?)	`x'`	$x'$	$x'$	$x^{'}$	prime is horizontally too far from the letter in client-side SVG mode
5 T434607 new task	`\ddot {x}`	${\ddot {x}}$	${\ddot {x}}$	$\ddot{x}$	derivative dots in ⁠ ${\ddot {x}}$ ⁠ are too small, hard to read
6 open	`\overbrace{ 1+2+\cdots+100 }^{5050}`	$\overbrace {1+2+\cdots +100} ^{5050}$	$\overbrace {1+2+\cdots +100} ^{5050}$	$\overset{5050}{\overset{⏞}{1 + 2 + \dots + 100}}$	spacing around + signs with an overbrace is completely wrong,
7 open	`\frac{\sum_{k=1}^N k^2}{a}`	${\frac {\sum _{k=1}^{N}k^{2}}{a}}$	${\frac {\sum _{k=1}^{N}k^{2}}{a}}$	$\frac{\sum_{k = 1}^{N} k^{2}}{a}$	Sum in a fraction uses the wrong format (should be inline style)
8 open	`\int_{a}^{b} x \ dx`	$\int _{a}^{b}x\ dx$	$\int _{a}^{b}x\ dx$	$\int_{a}^{b} x d x$	Lower limits of integrals are too far from the integral sign
17 open	`\tfrac12,\, \tfrac{123}{456},\, \tfrac{a}{b},\, \tfrac{\sqrt2 x}{5y}`	${\tfrac {1}{2}},\,{\tfrac {123}{456}},\,{\tfrac {a}{b}},\,{\tfrac {{\sqrt {2}}x}{5y}}$	${\tfrac {1}{2}},\,{\tfrac {123}{456}},\,{\tfrac {a}{b}},\,{\tfrac {{\sqrt {2}}x}{5y}}$	$\frac{1}{2}, \frac{123}{456}, \frac{a}{b}, \frac{\sqrt{2} x}{5 y}$	Text-style fractions have vertical spacing that is much too tight
	`S_0 \subset S_1\subset \dots\subset S_r`	$S_{0}\subset S_{1}\subset \dots \subset S_{r}$	$S_{0}\subset S_{1}\subset \dots \subset S_{r}$	$S_{0} \subset S_{1} \subset \dots \subset S_{r}$	Ellipses made with `\dots` aren't vertically centered in contexts where they should be
	`S_0 \subset S_1\subset \cdots\subset S_r`	$S_{0}\subset S_{1}\subset \cdots \subset S_{r}$	$S_{0}\subset S_{1}\subset \cdots \subset S_{r}$	$S_{0} \subset S_{1} \subset \dots \subset S_{r}$	Using `\cdots` they are correctly centered (amsmath is supposed to turn `\dots` into `\ldots` or `\cdots` based on context)
	`\left / \frac{a}{b} \right \backslash`	$\left/{\frac {a}{b}}\right\backslash$	$\left/{\frac {a}{b}}\right\backslash$	$/ \frac{a}{b} \$	Automatically sized (`\left` and `\right`) slashes are not correctly sized
	`\\|x\\|`	$\\|x\\|$	$\\|x\\|$	$‖ x ‖$	Poor font used for norm: The two vertical lines are too close together, which compromises legibility.
T434456 new task	`\left(a\right)'`	$\left(a\right)'$	$\left(a\right)'$	$(a)$	Missing prime symbol after lage right hand bracket. Main space example at Derivative#Rules for combined functions for quotient rule
	`\bigl( () \bigr)`	${\bigl (}(){\bigr )}$	${\bigl (}(){\bigr )}$	$(())$	Manually sized `\big` parens are too big. Apparently uses the wrong font
	`{\sin}\bigl(\tfrac14\pi\bigr)`	${\sin }{\bigl (}{\tfrac {1}{4}}\pi {\bigr )}$	${\sin }{\bigl (}{\tfrac {1}{4}}\pi {\bigr )}$	$\sin (\frac{1}{4} π)$	Slightly too much horizontal whitespace inside big parens
	`\mbox{if}\ n\ \mbox{is even}`	${\mbox{if}}\ n\ {\mbox{is even}}$	${\mbox{if}}\ n\ {\mbox{is even}}$	$if n is even$	Too much space between \mbox and mathematical symbol. The space in the \mbox also looks a bit big.
15 open	<math>f(x) = {}</math><math>x^2</math>	$f(x)={}$ $x^{2}$	$f(x)={}$ $x^{2}$	$f (x) =$ $x^{2}$	There's not enough space after the equals sign in `f(x) = {}` which means that a long inline equation broken up into multiple math tags to allow line breaks will have incorrect space between parts.
	let <math>f(x) = {}</math><math>x^2</math>	let $f(x)={}$ $x^{2}$	let $f(x)={}$ $x^{2}$	let $f (x) =$ $x^{2}$	Two `<math>` tags in a row have inconsistent baselines and neither one matches the adjacent text baseline. Bizarrely, the inconsistency is different than without the text (see preceding example).
	`C'^{*\!}, C'`	$C'^{*\!},C'$	$C'^{*\!},C'$	$C'^{*}, C^{'}$	Inexplicably inconsistent prime symbols
T434504 (this tracker issue currently doesn't address this bug)	`\overline{\operatorname{gd} z},\, \operatorname{gd} z`	${\overline {\operatorname {gd} z}},\,\operatorname {gd} z$	${\overline {\operatorname {gd} z}},\,\operatorname {gd} z$	$\overline{gd z}, gd z$	Not enough space between function and argument under overline: The spacing should be the same with or without the overline.
	`\sqrt{t} \sqrt{x \vphantom{t} }`	${\sqrt {t}}{\sqrt {x{\vphantom {t}}}}$	${\sqrt {t}}{\sqrt {x{\vphantom {t}}}}$	$\sqrt{t} \sqrt{x}$	Square root symbol is too high, which is especially ugly when trying to equalize the position of multiple square roots
	`\textstyle {F_n}^{\!2}`	$\textstyle {F_{n}}^{\!2}$	$\textstyle {F_{n}}^{\!2}$	${F_{n}}^{2}$	Superscript too far away, even after negative space
	`\begin{align} &\Q\bigl(\sqrt5\bigr) \\ &\Q\bigl(\sqrt5~\!\bigr) \end{align}`	${\begin{aligned}&\mathbb {Q} {\bigl (}{\sqrt {5}}{\bigr )}\\&\mathbb {Q} {\bigl (}{\sqrt {5}}~\!{\bigr )}\end{aligned}}$	${\begin{aligned}&\mathbb {Q} {\bigl (}{\sqrt {5}}{\bigr )}\\&\mathbb {Q} {\bigl (}{\sqrt {5}}~\!{\bigr )}\end{aligned}}$	$\begin{matrix} ℚ (\sqrt{5}) \\ ℚ (\sqrt{5}) \end{matrix}$	Workaround to add a tiny amount of space (`~\!`, + a medium space − a thin space should be something like 3 − 2 = +1 math units) ends up adding absurd amounts of extra space
	`\begin{align} &\sqrt{x} \big/ \sqrt{y} \\ &\sqrt{x} \big/ ~\!\!\sqrt{y} \\ &\sqrt{x} \big/ \!\sqrt{y} \end{align}`	${\begin{aligned}&{\sqrt {x}}{\big /}{\sqrt {y}}\\&{\sqrt {x}}{\big /}~\!\!{\sqrt {y}}\\&{\sqrt {x}}{\big /}\!{\sqrt {y}}\end{aligned}}$	${\begin{aligned}&{\sqrt {x}}{\big /}{\sqrt {y}}\\&{\sqrt {x}}{\big /}~\!\!{\sqrt {y}}\\&{\sqrt {x}}{\big /}\!{\sqrt {y}}\end{aligned}}$	$\begin{matrix} \sqrt{x} / \sqrt{y} \\ \sqrt{x} / \sqrt{y} \\ \sqrt{x} / \sqrt{y} \end{matrix}$	Workaround to remove a tiny amount of space (`~\!\!`, + a medium space − 2 thin spaces) ends up adding extra space instead (in this particular example just `\!` is better, but in some cases that takes out too much whitespace)
	`\begin{align} &xy \\ &x\,y \\ &x~y \\ &x\;y \\ &x\ y \end{align}`	${\begin{aligned}&xy\\&x\,y\\&x~y\\&x\;y\\&x\ y\end{aligned}}$	${\begin{aligned}&xy\\&x\,y\\&x~y\\&x\;y\\&x\ y\end{aligned}}$	$\begin{matrix} x y \\ x y \\ x y \\ x y \\ x y \end{matrix}$	`~` space is far too big. Supposed to be a 'medium' space (3 or 4 math units, equivalent to `\:` in LaTeX, which Mediawiki math mode doesn't support).
T434504 (this tracker issue currently doesn't address this bug)	`\mathrm{N}(\overline\alpha)`	$\mathrm {N} ({\overline {\alpha }})$	$\mathrm {N} ({\overline {\alpha }})$	$N (\overline{α})$	Overline too close to the letter, and not properly horizontally aligned
T434504	`\bar x \bar m \bar{ABC}`	${\bar {x}}{\bar {m}}{\bar {ABC}}$	${\bar {x}}{\bar {m}}{\bar {ABC}}$	$\bar{x} \bar{m} \bar{A B C}$	`\bar` does not behave as expected. Should be a consistent glyph not an overline of any arbitrary content
	`a \equiv b \pmod{m}`	$a\equiv b{\pmod {m}}$	$a\equiv b{\pmod {m}}$	$a \equiv b (\mod m)$	`\pmod` makes too little space before parentheses
	`x ^ {x ^ {568 + xyz + il\ell e c + \rho p} }`	$x^{x^{568+xyz+il\ell ec+\rho p}}$	$x^{x^{568+xyz+il\ell ec+\rho p}}$	$x^{x^{568 + x y z + i l ℓ e c + ρ p}}$	Super-superscript font is illegibly small and thin in "Client-side SVG" mode. Even the superscript font is pretty hard to read for readers with excellent displays and eyesight. (We don't currently seem to do it in any mode, but ideally we'd use a dedicated superscript font with increased weight and slightly changed letter shapes; see optical size. Computer Modern, implemented with Metafont, was designed such that TeX documents made with it would have slightly different letter shapes for every common text size, not just one shape for each symbol scaled up or down.)
	`\sum_0^{\frac12 X }`	$\sum _{0}^{{\frac {1}{2}}X}$	$\sum _{0}^{{\frac {1}{2}}X}$	$\sum_{0}^{\frac{1}{2} X}$	Vertical fraction in a summation limit is illegibly small
	`(kx)^2,\, \sqrt{(kx)^2,\, \left(kx\right)^2}`	$(kx)^{2},\,{\sqrt {(kx)^{2},\,\left(kx\right)^{2}}}$	$(kx)^{2},\,{\sqrt {(kx)^{2},\,\left(kx\right)^{2}}}$	$(k x)^{2}, \sqrt{(k x)^{2}, {(k x)}^{2}}$	Superscript after `)` symbol has wrong vertical position (too low) inside a square root, and the position is substantially inconsistent between `)` vs. `\right)`
	`\C \setminus \{0\},\, \C \smallsetminus \{0\}`	$\mathbb {C} \setminus \{0\},\,\mathbb {C} \smallsetminus \{0\}$	$\mathbb {C} \setminus \{0\},\,\mathbb {C} \smallsetminus \{0\}$	$ℂ ∖ {0}, ℂ ∖ {0}$	`\smallsetminus` uses the wrong symbol, should be more horizontal than vertical and should be noticeably different from `\setminus`
	`\square ABCD,\, \triangle ABC`	$\square ABCD,\,\triangle ABC$	$\square ABCD,\,\triangle ABC$	$◻ A B C D, △ A B C$	Square symbol is too small, doesn't match size of letters or triangle symbol
9 open	`\bigl[ \begin{smallmatrix} 1 & 1 \\ 1 & 0 \end{smallmatrix} \bigr]`	${\bigl [}{\begin{smallmatrix}1&1\\1&0\end{smallmatrix}}{\bigr ]}$	${\bigl [}{\begin{smallmatrix}1&1\\1&0\end{smallmatrix}}{\bigr ]}$	$[\begin{matrix} 1 & 1 \\ 1 & 0 \end{matrix}]$	Small matrix is ugly with poor spacing and alignment
	`\left(\frac{1+x}{2}\right),\, \left(\frac{1+x}{2}\right)^n`	$\left({\frac {1+x}{2}}\right),\,\left({\frac {1+x}{2}}\right)^{n}$	$\left({\frac {1+x}{2}}\right),\,\left({\frac {1+x}{2}}\right)^{n}$	$(\frac{1 + x}{2}), {(\frac{1 + x}{2})}^{n}$	Inclusion of a superscript outside of parentheses breaks the spacing around + sign in a fraction

Larger equations
Number	LaTex	server-side svg	client side svg	client side mathml	Notes
10 open	`\begin{bmatrix} 0 & \cdots & 0 \\ \vdots & \ddots & \vdots \\ 0 & \cdots & 0 \end{bmatrix}`	${\begin{bmatrix}0&\cdots &0\\\vdots &\ddots &\vdots \\0&\cdots &0\end{bmatrix}}$	${\begin{bmatrix}0&\cdots &0\\\vdots &\ddots &\vdots \\0&\cdots &0\end{bmatrix}}$	$[\begin{matrix} 0 & \dots & 0 \\ ⋮ & ⋱ & ⋮ \\ 0 & \dots & 0 \end{matrix}]$	all types of ellipsis use the wrong font – the dots are spaced much too closely together
11 open	`\begin{bmatrix} x & y \\ z & v \end{bmatrix}`	${\begin{bmatrix}x&y\\z&v\end{bmatrix}}$	${\begin{bmatrix}x&y\\z&v\end{bmatrix}}$	$[\begin{matrix} x & y \\ z & v \end{matrix}]$	There's not enough horizontal whitespace space between the contents of a matrix and the brackets surrounding it
12 open	`f(n) = \begin{cases} n/2, & \text{if }n\text{ is even} \\ 3n+1, & \text{if }n\text{ is odd} \end{cases}`	$f(n)={\begin{cases}n/2,&{\text{if }}n{\text{ is even}}\\3n+1,&{\text{if }}n{\text{ is odd}}\end{cases}}$	$f(n)={\begin{cases}n/2,&{\text{if }}n{\text{ is even}}\\3n+1,&{\text{if }}n{\text{ is odd}}\end{cases}}$	$f (n) = {\begin{matrix} n / 2, & if n is even \\ 3 n + 1, & if n is odd \end{matrix}$	There's not enough horizontal whitespace after the brace in the 'cases' environment
13 open	`\begin{align} f(x) & = (a+b)^2 \\ & = a^2+2ab+b^2 \\ \end{align}`	${\begin{aligned}f(x)&=(a+b)^{2}\\&=a^{2}+2ab+b^{2}\\\end{aligned}}$	${\begin{aligned}f(x)&=(a+b)^{2}\\&=a^{2}+2ab+b^{2}\\\end{aligned}}$	$\begin{matrix} f (x) & = (a + b)^{2} \\ = a^{2} + 2 a b + b^{2} \end{matrix}$	The "align" environment has moderately broken whitespace,
14 open	`\begin{alignat}{2} f(x) & = (a-b)^2 \\ & = a^2-2ab+b^2 \\ \end{alignat}`	${\begin{alignedat}{2}f(x)&=(a-b)^{2}\\&=a^{2}-2ab+b^{2}\\\end{alignedat}}$	${\begin{alignedat}{2}f(x)&=(a-b)^{2}\\&=a^{2}-2ab+b^{2}\\\end{alignedat}}$	$\begin{matrix} f (x) & = (a - b)^{2} \\ = a^{2} - 2 a b + b^{2} \end{matrix}$	and "alignat" is completely broken.
14 open T434424	`\begin{alignat}{3} f(a,b) & = (a+b)^2 && = (a+b)(a+b) \\ & = a^2+ab+ba+b^2 && = a^2+2ab+b^2 \\ \end{alignat}`	${\begin{alignedat}{3}f(a,b)&=(a+b)^{2}&&=(a+b)(a+b)\\&=a^{2}+ab+ba+b^{2}&&=a^{2}+2ab+b^{2}\\\end{alignedat}}$	${\begin{alignedat}{3}f(a,b)&=(a+b)^{2}&&=(a+b)(a+b)\\&=a^{2}+ab+ba+b^{2}&&=a^{2}+2ab+b^{2}\\\end{alignedat}}$	$\begin{matrix} f (a, b) & = (a + b)^{2} & = (a + b) (a + b) \\ = a^{2} + a b + b a + b^{2} & = a^{2} + 2 a b + b^{2} \end{matrix}$	Too much space in alignat in MathMl and Client SVG
	{{box\|<math>\begin{align} x &= 1, \\ y &= 2.\end{align}</math>}} {{box\|<math>\begin{align} x &= 1, \\ y &= 2. \\ \end{align}</math>}}	${\begin{aligned}x&=1,\\y&=2.\end{aligned}}$ ${\begin{aligned}x&=1,\\y&=2.\\\end{aligned}}$	${\begin{aligned}x&=1,\\y&=2.\end{aligned}}$ ${\begin{aligned}x&=1,\\y&=2.\\\end{aligned}}$	$\begin{matrix} x & = 1, \\ y & = 2. \end{matrix}$ $\begin{matrix} x & = 1, \\ y & = 2. \end{matrix}$	Adding `\\` at the end of the align environment causes pointless extra space at the bottom. Output should be identical with or without the trailing `\\`.
	`\begin{align} \frac{\pi}{4} &= \sum_{n=0}^{\infty} \left(\frac{1}{4n+1}-\frac{1}{4n+3}\right) \\[6px] &= \sum_{n=0}^{\infty} \frac{2}{(4n+1)(4n+3)} \end{align}`	${\begin{aligned}{\frac {\pi }{4}}&=\sum _{n=0}^{\infty }\left({\frac {1}{4n+1}}-{\frac {1}{4n+3}}\right)\\[6px]&=\sum _{n=0}^{\infty }{\frac {2}{(4n+1)(4n+3)}}\end{aligned}}$	${\begin{aligned}{\frac {\pi }{4}}&=\sum _{n=0}^{\infty }\left({\frac {1}{4n+1}}-{\frac {1}{4n+3}}\right)\\[6px]&=\sum _{n=0}^{\infty }{\frac {2}{(4n+1)(4n+3)}}\end{aligned}}$	$\begin{matrix} \frac{π}{4} & = \sum_{n = 0}^{\infty} (\frac{1}{4 n + 1} - \frac{1}{4 n + 3}) \\ [6 p x] & = \sum_{n = 0}^{\infty} \frac{2}{(4 n + 1) (4 n + 3)} \end{matrix}$	In "align" extra vertical spacing instructions at line breaks written in terms of 'px' units are visibly rendered instead of changing the spacing
	`\begin{align} f(x) &= 2(x + 2) \\[20mu] &= 2x + 4 \\[8pt] &= 2x + 2^2 \end{align}`	${\begin{aligned}f(x)&=2(x+2)\\[20mu]&=2x+4\\[8pt]&=2x+2^{2}\end{aligned}}$	${\begin{aligned}f(x)&=2(x+2)\\[20mu]&=2x+4\\[8pt]&=2x+2^{2}\end{aligned}}$	$\begin{matrix} f (x) & = 2 (x + 2) \\ = 2 x + 4 \\ = 2 x + 2^{2} \end{matrix}$	In "align" extra vertical spacing instructions at line breaks written in terms of 'mu' and 'pt' units do not properly change the spacing
16 reopened T377167	\begin{array}{\|c\|c\|c\|} a & b & S \\ \hline 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \\ \end{array}	${\begin{array}{\|c\|c\|c\|}a&b&S\\\hline 0&0&1\\0&1&1\\1&0&1\\1&1&0\\\end{array}}$	${\begin{array}{\|c\|c\|c\|}a&b&S\\\hline 0&0&1\\0&1&1\\1&0&1\\1&1&0\\\end{array}}$	$\begin{matrix} a & b & S \\ 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \end{matrix}$	Lines between cells in the 'array' environment are not rendered at all. T377167 now reopened.
	`\begin{align}x = b_0 + \dfrac{a_1}{b_1} {{}\atop+} \\[28mu]\ \end{align} \! \begin{align} \dfrac{a_2}{b_2} {{}\atop+} \\[2mu] \ \end{align} \! \begin{align}\dfrac{a_3}{b_3} {{}\atop+}\end{align} \! \begin{align}\\[2mu] \dfrac{a_4}{b_4} +\, \cdots. \end{align}`	${\begin{aligned}x=b_{0}+{\dfrac {a_{1}}{b_{1}}}{{} \atop +}\\[28mu]\ \end{aligned}}\!{\begin{aligned}{\dfrac {a_{2}}{b_{2}}}{{} \atop +}\\[2mu]\ \end{aligned}}\!{\begin{aligned}{\dfrac {a_{3}}{b_{3}}}{{} \atop +}\end{aligned}}\!{\begin{aligned}\\[2mu]{\dfrac {a_{4}}{b_{4}}}+\,\cdots .\end{aligned}}$	${\begin{aligned}x=b_{0}+{\dfrac {a_{1}}{b_{1}}}{{} \atop +}\\[28mu]\ \end{aligned}}\!{\begin{aligned}{\dfrac {a_{2}}{b_{2}}}{{} \atop +}\\[2mu]\ \end{aligned}}\!{\begin{aligned}{\dfrac {a_{3}}{b_{3}}}{{} \atop +}\end{aligned}}\!{\begin{aligned}\\[2mu]{\dfrac {a_{4}}{b_{4}}}+\,\cdots .\end{aligned}}$	$\begin{matrix} x = b_{0} + \frac{a_{1}}{b_{1}} \binom{}{+} \end{matrix} \begin{matrix} \frac{a_{2}}{b_{2}} \binom{}{+} \end{matrix} \begin{matrix} \frac{a_{3}}{b_{3}} \binom{}{+} \end{matrix} \begin{matrix} \frac{a_{4}}{b_{4}} + \dots . \end{matrix}$	Workaround used to render Leibniz's continued fraction notation is broken. (Such workarounds are necessary because Mediawiki's LaTeX implementation doesn't support the usual LaTeX commands for positioning elements.)
	`\cfrac{a_1}{1+a_2-\cfrac{a_2a_3} {1+a_3+a_4-\cfrac{a_4a_5} {1+a_5+a_6- \ddots } } }`	${\cfrac {a_{1}}{1+a_{2}-{\cfrac {a_{2}a_{3}}{1+a_{3}+a_{4}-{\cfrac {a_{4}a_{5}}{1+a_{5}+a_{6}-\ddots }}}}}}$	${\cfrac {a_{1}}{1+a_{2}-{\cfrac {a_{2}a_{3}}{1+a_{3}+a_{4}-{\cfrac {a_{4}a_{5}}{1+a_{5}+a_{6}-\ddots }}}}}}$	$\frac{a_{1}}{1 + a_{2} - \frac{a_{2} a_{3}}{1 + a_{3} + a_{4} - \frac{a_{4} a_{5}}{1 + a_{5} + a_{6} - ⋱}}}$	Incorrect vertical spacing in cfrac
	`\operatorname{gd} ({\pm \pi i} + \bar z) = \begin{cases} \pi - \overline{\operatorname{gd} z} \quad &\mbox{if }\ \ \operatorname{Re} z \geq 0, \\[5mu] -\pi - \overline{\operatorname{gd} z} \quad &\mbox{if }\ \ \operatorname{Re} z < 0, \end{cases}`	$\operatorname {gd} ({\pm \pi i}+{\bar {z}})={\begin{cases}\pi -{\overline {\operatorname {gd} z}}\quad &{\mbox{if }}\ \ \operatorname {Re} z\geq 0,\\[5mu]-\pi -{\overline {\operatorname {gd} z}}\quad &{\mbox{if }}\ \ \operatorname {Re} z<0,\end{cases}}$	$\operatorname {gd} ({\pm \pi i}+{\bar {z}})={\begin{cases}\pi -{\overline {\operatorname {gd} z}}\quad &{\mbox{if }}\ \ \operatorname {Re} z\geq 0,\\[5mu]-\pi -{\overline {\operatorname {gd} z}}\quad &{\mbox{if }}\ \ \operatorname {Re} z<0,\end{cases}}$	$gd (\pm π i + \bar{z}) = {\begin{matrix} π - \overline{gd z} & if Re z \geq 0, \\ - π - \overline{gd z} & if Re z < 0, \end{matrix}$	Inconsistent overline thickness
	`\bigl\{ {\textstyle \sum_{i=1}^n \alpha_i\beta_i} \mathrel{\big\|} n \in \N,\, a_i \in \mathfrak{a},\, b_i \in \mathfrak{b} \bigr\}`	${\bigl \{}{\textstyle \sum _{i=1}^{n}\alpha _{i}\beta _{i}}\mathrel {\big \|} n\in \mathbb {N} ,\,a_{i}\in {\mathfrak {a}},\,b_{i}\in {\mathfrak {b}}{\bigr \}}$	${\bigl \{}{\textstyle \sum _{i=1}^{n}\alpha _{i}\beta _{i}}\mathrel {\big \|} n\in \mathbb {N} ,\,a_{i}\in {\mathfrak {a}},\,b_{i}\in {\mathfrak {b}}{\bigr \}}$	${\sum_{i = 1}^{n} α_{i} β_{i} \| n \in ℕ, a_{i} \in 𝔞, b_{i} \in 𝔟}$	Vertical line explicitly set to use relation spacing (`\mathrel{\big\|}`) for use in set-builder notation has wrong spacing on the left side

Math format inconsistencies primarily affecting MathML mode
Number	LaTex	server-side svg	client side svg	client side mathml	Notes
	`x : y : z`	$x:y:z$	$x:y:z$	$x : y : z$	Lack of space before colon
T410843	`p(a\|b)`	$p(a\|b)$	$p(a\|b)$	$p (a \| b)$	Pipe introduces spurious spacing in Firefox
	`\\|pq\\| = \\|p\\| \\|q\\|`	$\\|pq\\|=\\|p\\|\\|q\\|$	$\\|pq\\|=\\|p\\|\\|q\\|$	$‖ p q ‖ = ‖ p ‖ ‖ q ‖$	Norm introduces spurious spacing in Firefox
	`\begin{align} \sqrt5 \end{align}`	${\begin{aligned}{\sqrt {5}}\end{aligned}}$	${\begin{aligned}{\sqrt {5}}\end{aligned}}$	$\begin{matrix} \sqrt{5} \end{matrix}$	`align` environment wreaks hilarious havoc with square roots in Safari
	`a \xrightarrow{\cong} b`	$a\xrightarrow {\cong } b$	$a\xrightarrow {\cong } b$	$a \overset{≅}{\to} b$	The ≅ symbol above the arrow is not clipped (as in server-side SVG render, which took a workaround to avoid) but in MathML mode is positioned too far to the right.

Formatting notes

To add and example, use a line like

|-
|| {{phab|T1234}} status || {{/RowFormat| 1= \tbinom{n}{k} }} || Description

In one of the tables. This will automatically add four columns with the latex code,

There are some restrictions on the characters that you can use in parameters to the {{/RowFormat}} template. The character | is treated as a separator between template characters so can't be use directly, instead use the {{!}} special template that is converted to a pipe character in the template transclusion process. Double curly bracket either {{ or }} signify the start or end of a template to transclude. Here simply add a space between then, latex ignore the extra space.

example with pipe characters.
Number	LaTex	server-side svg	client side svg	client side mathml	Notes
1	`\left\| \frac 1 2 \right\|`	$\left\|{\frac {1}{2}}\right\|$	$\left\|{\frac {1}{2}}\right\|$	$\| \frac{1}{2} \|$	Produced with: {{/RowFormat\| 1= \left{{!}} \frac 1 2 \right{{!}} }}
2	`\overline{\frac{top}{bottom} }`	${\overline {\frac {top}{bottom}}}$	${\overline {\frac {top}{bottom}}}$	$\overline{\frac{t o p}{b o t t o m}}$	Produced with: {{/RowFormat\| 1= \overline{\frac{top}{bottom} } }} rather than {{/RowFormat\| 1= \overline{\frac{top}{bottom}} }} which causes errors.
3	<math>\left\|\overline{\frac{a}{b}}\right\|</math>	$\left\|{\overline {\frac {a}{b}}}\right\|$	$\left\|{\overline {\frac {a}{b}}}\right\|$	$\| \overline{\frac{a}{b}} \|$	Manual entry without using the RowFormat template. See souce code for format.

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Wikipedia:WikiProject Mathematics/MathFormattingBugs

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