Wednesday January 25, 4:00pm-5:10pm
Padelford
C-401
Pre-Seminar 3:30pm-3:55pm in PDL C-401
ABSTRACT
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I will describe the combinatorics of Schubert curves: one-dimensional intersections of Grassmannian Schubert varieties defined with respect to tangent flags of the rational normal curve. The real geometry of a Schubert curve is given by a map $\omega$ on skew tableaux, defined as the commutator of jeu de taquin rectification and promotion. In particular, the real locus of the Schubert curve naturally covers $\mathbb{RP}^1$, with $\omega$ as the monodromy operator. |
Sara Billey, Combinatorics Seminar, Mathematics Department, University of Washington |
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