Graduate Colloquium
The graduate students of the Mathematics Department coordinate a quarterly colloquium. The talks are generally every Thursday from 4-5 PM, with an informal tea (get-together) beforehand.
Schedule (click dates for title and abstract)
1/21 | Andrew Kobin | UCSC |
1/28 | hold for other event | |
2/4 | hold for other event | |
2/11 | hold for other event | |
2/18 | hold for other event | |
2/25 | TBD | |
3/4 | Ezekiel Lemann | SUNY Binghamton |
Andrew Kobin, UCSC
What is a stack?
Many classification problems in math are made harder by nontrivial automorphisms of the objects one is trying to classify. Groupoids, and ultimately stacks, are the right language to solve these problems in a satisfying way. In this talk, I will gently ease the audience into the waters of algebraic geometry while sprinkling in the motivating principles behind stacks. Then we will look at some important examples of algebraic stacks, including quotient stacks and the moduli stack of elliptic curves.
Ezekiel Lemann, SUNY Binghamton
title
abstract