##### Department of Mathematics,

University of California San Diego

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### Math 211 B00 - Group Actions Seminar

## Forte Shinko

#### California Institute of Technology

## Realizations of equivalence relations and subshifts

##### Abstract:

Every continuous action of a countable group on a Polish space induces a Borel equivalence relation. We are interested in the problem of realizing (i.e. finding a Borel isomorphic copy of) these equivalence relations as continuous actions on compact spaces. We provide a number of positive results for variants of this problem, and we investigate the connection to subshifts.

Host: Brandon Seward

### September 30, 2021

### 12:00 PM

Zoom ID 967 4109 3409 (email an organizer for the password)

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