### GEORGE MASON
UNIVERSITY

DEPARTMENT OF MATHEMATICAL
SCIENCES

COLLOQUIUM

NOVEMBER 7, 2014

**Speaker: **
Alex Burstein, Howard University

**Title: ***
Patterns in permutations
*

**Abstract:**
A permutation pattern is an order-isomorphism class of a sequence, e.g. of a subsequence of a permutation. We will consider permutation patterns and their various applications and generalizations, look at the sets of permutations with various forbidden patterns, their cardinalities, rates of growth, etc. We will also consider the partial order on permutations under pattern containment and the properties of its Mobius function.

**Time:** Friday, November 7, 2014, 3:30-4:20 p.m.

**Place:** Exploratory Hall, room 4106

**Refreshments** will be served at 3:00 p.m.

Department of Mathematical Sciences

George Mason University

4400 University Drive, MS 3F2

Fairfax, VA 22030-4444

http://math.gmu.edu/

Tel. 703-993-1460, Fax. 703-993-1491