##### Department of Mathematics,

University of California San Diego

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### Algebra Seminar

## Don Passman

#### University of Wisconsin

## Traces of Algebraic Elements in Group Algebras

##### Abstract:

If $K[G]$ denotes the group algebra of G over the field K, then the trace map $tr : K[G] \to K$ picks off the identity coefficient of each element of the ring. In this talk, I will discuss what is known about traces of algebraic elements of $K[G]$. Of particular interest are the traces of idempotents and nilpotent elements. If time permits, I will also consider analogous results for twisted group algebras.

Host: Dan Rogalski

### March 9, 2015

### 3:00 PM

### AP&M 7218

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