Seminar Event Detail


Combinatorics

Date:  Friday, October 09, 2015
Location:  4088 East Hall (3:10 PM to 4:00 PM)

Title:  Chromatic quasisymmetric functions

Abstract:   In joint work with John Shareshian, we defined a refinement of Stanley's chromatic symmetric function of a graph. The refinement is a quasisymmetric function, and in fact is symmetric for a certain class of graphs. I will discuss our conjecture relating the chromatic quasisymmetric functions for this class to Hessenberg varieties, and its connection to the long standing e-positivity conjecture of Stanley and Stembridge. I will also present some results supporting our conjecture.

Files:


Speaker:  Michelle Wachs
Institution:  U. Miami

Event Organizer:   Sergey Fomin   

 

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