Laurent Lafforgrue - Grothendieck toposes as generalised spaces (part 4)
Channel: Università degli Studi dell'Insubria
Date: 20/09/2018

Grothendieck toposes as generalised spaces 
Laurent Lafforgue - IHES

We will present the basic denitions and results of Grothendieck toposes theory, as it was developed in SGA 4.

First part (two hours):
- Sites and associated toposes
- Giraud's theorem
- Representability critera

Second part (two hours):
- Morphisms of toposes
- Subtoposes
- Canonical and subcanonical topologies

link to homepage : http://tcsc.lakecomoschool.org