Jacques Tits

Jacques Tits
Tits in 2008
Born	(1930-08-12)12 August 1930 Uccle, Belgium
Died	5 December 2021(2021-12-05) (aged 91) 13th arrondissement, Paris, France
Citizenship	Belgian (1930–1974) French (since 1974)
Alma mater	Free University of Brussels
Known for	Tits alternative Tits building Tits cone Tits group Tits index Tits metric Tits systems Bruhat–Tits fixed point theorem Freudenthal–Tits magic square Kantor–Koecher–Tits construction Artin-Tits group Kneser–Tits conjecture Field with one element Generalized polygon
Awards	Francois Deruyts Prize (1962) Wolf Prize (1993) Pour le Mérite (1995) Cantor medal (1996) Abel Prize (2008)
Scientific career
Fields	Mathematics
Institutions	Free University of Brussels Vrije Universiteit Brussel University of Bonn Collège de France French Academy of Sciences
Thesis	Généralisation des groupes projectifs basés sur la notion de transitivité  (1950)
Doctoral advisor	Paul Libois
Doctoral students	Francis Buekenhout Jens Carsten Jantzen Karl-Otto Stöhr

Jacques Tits (French: [ʒak tits]) (12 August 1930 – 5 December 2021) was a Belgian-born French mathematician who worked on group theory and incidence geometry. He introduced Tits buildings, the Tits alternative, the Tits group, and the Tits metric.