Topology Seminar: Xing Gu
Topic
On the cohomology and Chow ring of BPGLn(C)
Speakers
Details
The classifying space of the nth projective unitary group, BPUn, is a fundamental mathematical object. However, unlike its close cousins BUn, BSUn, etc., surprisingly little has been known to its cohomology. I will briefly introduce the roles of BPUn in the study of the topological period-index problem and anomalies in theoretical physics, and present recent progresses on the computation of its cohomology.
In the context of algebraic geometry, BPGLn, the classifying stack of the projective linear group PGLn, is an analog of BPUn, while the theory of Chow rings plays a similar role as singular cohomology. I will point out where the above computation pass to the Chow ring of BPGLn.
Additional Information
Location: ESB 4133 (PIMS Lounge)
Xing Gu, University of Melbourne
Xing Gu, University of Melbourne
This is a Past Event
Event Type
Scientific, Seminar
Date
June 19, 2019
Time
-
Location