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Speaker:
June Huh
Date:
Thu, 05/09/2013 - 16:30 - 17:15
Location:
MPIM Lecture Hall Rota's conjecture predicts that the coefficients of the characteristic polynomial of a matroid form a log-concave sequence. I will outline a proof for representable matroids using Milnor numbers and the Bergman fan. The same approach to the conjecture in the general case (for possibly non-representable matroids) leads to several intriguing questions on higher codimension algebraic cycles in toric varieties.
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