The Weil representation leads one to consider certain Lie groups that arise as universal covers of matrix groups. I will give some examples of how these arise in topology, describing first a theorem of W. Meyer about the signature of surface bundles, and then a more recent theorem about 3-manifolds that involves a more subtle characteristic class. This is joint work with Amina Abdurrahman.
Rademacher Lectures
Tuesday, November 1, 2022 - 3:45pm
Akshay Venkatesh
Institute for Advanced Study
Other Events on This Day
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The cyclic open-closed map, u-connections and R-matrices
Math-Physics Joint Seminar
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Aspects of flagellate motility
MathBio Seminar
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What is the cost of cut?
Logic and Computation Seminar
2:00pm
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Sandpiles
Probability and Combinatorics
3:30pm