##### Department of Mathematics,

University of California San Diego

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### Math 264 - Combinatorics

## Yuval Roichman

#### Bar-Ilan University (currently visiting UCSD)

## Abstract Young Tableaux

##### Abstract:

A direct combinatorial construction of symmetric group representations, avoiding a priori use of external concepts (such as Young tableaux), is presented. The construction leads to the study of old and new combinatorial structures; e.g., distinguished intervals in Bruhat posets, shuffles and induction, generalized Young forms and convexity in Cayley graphs. (This is joint work with Ron Adin and Francesco Brenti)

Host: Jeff Remmel

### February 1, 2005

### 3:00 PM

### AP&M 7321

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