Calendar

23 Fri
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2:30 pm Logic seminar: Umar Gaffar @ Keller 314
Logic seminar: Umar Gaffar @ Keller 314
Feb 23 @ 2:30 pm – 3:30 pm
This week Umar Gaffar will give Shelah’s proof of the following result: Let $\lambda$ be the cardinality of an ultraproduct of finite sets. If $\lambda$ is infinite then $\lambda=\lambda^{\aleph_0}$.
3:30 pm Colloquium: Rohit Nagpal (U. Chicago) @ Keller 401
Colloquium: Rohit Nagpal (U. Chi... @ Keller 401
Feb 23 @ 3:30 pm – 4:30 pm
Speaker: Rohit Nagpal Title: Stability in the high dimensional cohomology of certain arithmetic groups Abstract: Borel-Serre duality relates high dimensional cohomology of arithmetic groups to the low dimensional homology of these groups with coefficients in[...]