Michel Plancherel

Michel Plancherel
Michel Plancherel
	Michel Plancherel at the International Mathematical Congress, Zürich 1932
Born	16 January 1885; Bussy, Switzerland
Died	4 March 1967 (aged 82); Zürich, Switzerland
Alma mater	University of Fribourg
Known for	Plancherel measure; Plancherel theorem; Plancherel theorem for spherical functions
	Scientific career
Fields	Mathematics
Institutions	ETH Zurich
Thesis	Sur les congruences (mod. 2m) relatives au nombre des classes des formes quadratiques binaires aux coefficients entiers et à discriminant négatif (1907)
Doctoral advisor	Mathias Lerch

Michel Plancherel (French pronunciation: [miʃɛl plɑ̃ʃʁɛl]; 16 January 1885 – 4 March 1967) was a Swiss mathematician.

Biography

He was born in Bussy (Canton of Fribourg, Switzerland) and obtained his Diplom in mathematics from the University of Fribourg and then his doctoral degree in 1907 with a thesis written under the supervision of Mathias Lerch. Plancherel was a professor in Fribourg (1911), and from 1920 at ETH Zurich.

He worked in the areas of mathematical analysis, mathematical physics and algebra, and is known for the Plancherel theorem^[1] in harmonic analysis. He was an Invited Speaker of the ICM in 1924 at Toronto^[2] and in 1928 at Bologna.

He was married to Cécile Tercier, had nine children, and presided at the Mission Catholique Française in Zürich.

^ Plancherel, Michel (1910) "Contribution a l'etude de la representation d'une fonction arbitraire par les integrales définies," Rendiconti del Circolo Matematico di Palermo, vol. 30, pages 289-335.
^ Plancherel, Michel (1924) " Sur les séries de fonctions orthogonales." Archived 2017-12-03 at the Wayback Machine In Proceedings of the International Mathematical Congress, Toronto, vol. 1, pp. 619–622.

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