[Binghamton Geometry Topology Seminar] This Week's Seminar

[Matthew R Haulmark]

Hi everyone,

This week our speaker is Kathyrn Mann from Cornell University.

*Title*: Reconstructing maps out of groups

*Abstract: *his talk is about the relationship between the algebraic
structure of a discrete group and the possible dynamics of its actions.
I'll explain a result with Maxime Wolff where we show that, under some
circumstances, one can completely reconstruct a homeomorphism of a space
out of algebraic (group structure) data.  As a consequence of this, we gave
an independent short proof of a recent theorem of Kim and Koberda:  you can
distinguish the group of $C^r$ diffeomorphisms of a 1-manifold from the
group of $C^s$ diffeomorphisms just by knowing their finitely generated

Also, this week the *coffee will be at 2 pm* right before the talk. We will
use the same link for both.

Zoom link for coffee 2:00-2:50 pm and the seminar, 2:50 - 3:50 pm:
https://binghamton.zoom.us/j/94057178271

See you Thursday!

Best,

Matt
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