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Title: Graph covers with two new eigenvalues
Speaker: | Olha Silina |
Affiliation: | University of Waterloo |
Room: | MC 5479 |
Abstract:
I am going to talk about graph covers. If $Y$ is a cyclic cover of $X$, it turns out that $Y$ has the same spectrum as $X$ plus (possibly) some new eigenvalues.
Title: OutFn, M_gn and renormalized topological field theory
Speaker: | Michael Borinsky |
Affiliation: | Nikhef |
Room: | MC 5417 |
Abstract:
I will report on recent joint work with Karen Vogtmann on the Euler characteristic of Out(F_n) and the moduli space of graphs.
Title: Permanent Hardness from Linear Optics
Speaker: | Daniel Grier |
Affiliation: | University of Waterloo |
Room: | MC 5501 |
Abstract:
One of the great accomplishments in complexity theory was Valiant's 1979 proof that the permanent of a matrix is #P-hard to compute. Subsequent work simplified Valiant's ideas and even began to recast them as problems in quantum computing.
Please email any errors or updates to our website support/editor.
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