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math.CO2016
The Exchange Graphs of Weakly Separated Collections
Meena Jagadeesan
Weakly separated collections arise in the cluster algebra derived from the Plücker coordinates on the nonnegative Grassmannian. Oh, Postnikov, and Speyer studied weakly separated c…
math.CO2014
Möbius Polynomials of Face Posets of Convex Polytopes
Meena Jagadeesan, Susan Durst
The Möbius polynomial is an invariant of ranked posets, closely related to the Möbius function. In this paper, we study the Möbius polynomial of face posets of convex polytopes. We…