Department of Mathematics


  •  Colin McLarty, Case Western Reserve University
  •  Grothendieck's personal idea of a topos as a space
  •  10/06/2020
  •  4:00 PM - 5:00 PM
  •  Online (virtual meeting)

In 33 hours of tape recordings in 1973 Grothendieck described his view of topos beyond what is in the collective volume Théorie des topos et cohomologie étale (SGA 4). In particular, this shows how Grothendieck got his idea of a "generalized topological space" simultaneously with what became etale cohomology during a 1958 talk by Jean-Pierre Serre.



Department of Mathematics
Michigan State University
619 Red Cedar Road
C212 Wells Hall
East Lansing, MI 48824

Phone: (517) 353-0844
Fax: (517) 432-1562

College of Natural Science