Seminar series
Date
Wed, 20 Nov 2019
15:00
15:00
Location
N3.12
Speaker
Jay Swar
Organisation
Oxford University
In this talk, I will introduce the notion of a sheaf on a topological space. I will then explain why "topological spaces" are an artificial limitation on enjoying life (esp. cohomology) to the fullest and what to do about that (answer: sites). Sheaves also fail our needs, but they have a suitable natural upgrade (i.e. stacks).
This talk will be heavily peppered with examples that come from the world around you (music, torsors, etc.).