| Jean Giraud | |
| Birth Date: | 2 February 1936 |
| Nationality: | French |
| Fields: | Mathematics |
| Alma Mater: | University of Paris |
| Doctoral Advisor: | Alexander Grothendieck |
| Known For: | Giraud subcategory Giraud's axioms Gerbe Sieve Stacks Twisted sheaf |
Jean Giraud (in French ʒiʁo/; 2 February 1936 – 27 or 28 March 2007)[1] was a French mathematician, a student of Alexander Grothendieck. His research focused on non-abelian cohomology and the theory of topoi. In particular, he authored the book Cohomologie non-abélienne (Springer, 1971) and proved the theorem that bears his name, which gives a characterization of a Grothendieck topos.[2]
From 1969 to 1989, he was a professor at École normale supérieure de Saint-Cloud.
From 1993 to 1994, he was deputy director for research of École normale supérieure de Lyon, where he was made interim director in 1994 and director from 1995 to 2000.[1]