**UM Math Graduate Students Seminar**

Rafael S. González D'León

*University of Miami*

**will present**

**What is... a Matroid?**

Friday, September 09, 2011, 4:00pm

Ungar Building Room 402

**Abstract:**A concept introduced by H. Whitney in the 30's. A matroid is a rich combinatorial structure that arises naturally in vector spaces, graphs, field extensions, stable polynomials, etc... It has a great variety of descriptions and applications. We will discuss the definition and some notions and examples that motivate the theory.

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