Wednesday April 19, 4:00pm-5:10pm
Padelford
C-401
Pre-Seminar 3:30pm-3:55pm in PDL C-401
ABSTRACT
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Two different-looking commutative algebraic ways to get the characteristic polynomial of a hyperplane arrangement appear in the literature: from the K-polynomial of the reciprocal plane (Orlik-Terao), and from the multidegree of the graph over this plane (Adiprasito-Huh-Katz). We give a Stanley-Reisner initial degeneration explaining why these two are not different after all. |
Sara Billey, Combinatorics Seminar, Mathematics Department, University of Washington |
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