##### Department of Mathematics,

University of California San Diego

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### Virtual Combinatorics Colloquium

## Vic Reiner

#### University of Minnesota

## Cyclic sieving: Old and new

##### Abstract:

Cyclic sieving, identified in work with Dennis Stanton and Dennis White, is a happy situation, where counting how many among some objects enjoy cyclic symmetry is as easy as $q$-counting all of the objects. We will illustrate this with two kinds of examples: old ones that still plague us with only uninsightful proofs, and new ones that have joined our list of favorites.

### November 14, 2018

### 12:00 PM

### AP&M 6402

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