Department of Mathematics,
University of California San Diego
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Algebra Seminar
Robert Won
UCSD
Z-graded noncommutative projective geometry
Abstract:
The first Weyl algebra $A = k\langle x, y \rangle/(xy - yx - 1)$ is $\mathbb{Z}$-graded with deg x = 1 and deg y = -1. Susan Sierra and Paul Smith studied the category of graded modules over A, showing that this category was equivalent to coherent sheaves on a certain quotient stack. In this talk, we investigate the graded module categories over $\mathbb{Z}$-graded rings called generalized Weyl algebras. We construct commutative rings with equivalent graded module categories. In the pre-talk, we will discuss some preliminaries on categories and graded rings before giving an overview of noncommutative projective geometry. Please note: There will be a pre-talk for graduate students from 2:30 - 3:00. The regular talk will begin at 3:00.
Host: Daniel Rogalski
November 9, 2015
2:00 PM
AP&M 7321
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