Seminar Event Detail


Combinatorics

Date:  Friday, January 27, 2012
Location:  3866 East Hall (4:10 PM to 5:00 PM)

Title:  Universal geometric cluster algebras

Abstract:   For each skew-symmetrizable integer matrix B, there are infinitely many cluster algebras of geometric type, differing by a choice of coefficients. These are related by maps called coefficient specializations. In this talk, I'll discuss the general problem of finding a cluster algebra of geometric type that is universal, in the sense of coefficient specializations, among geometric cluster algebras for B. If B is of finite type, then the problem was solved by Fomin and Zelevinsky. I'll show how the Fomin-Zelevinsky result can be rephrased in a form that admits generalization beyond finite type. The generalization revolves around a fan called the mutation fan for B.

Files:


Speaker:  Nathan Reading
Institution:  NCSU

Event Organizer:     

 

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