Math @ Duke

Publications [#243933] of Ezra Miller
Papers Published
 with Knutson, A; Miller, E; Yong, A, Tableau complexes,
Israel Journal of Mathematics, vol. 163
(2008),
pp. 317343, ISSN 00212172 [MR2009b:05264], [math.CO/0510487], [doi]
(last updated on 2017/12/15)
Abstract: Let X, Y be finite sets and T a set of functions X → Y which we will call " tableaux". We define a simplicial complex whose facets, all of the same dimension, correspond to these tableaux. Such tableau complexes have many nice properties, and are frequently homeomorphic to balls, which we prove using vertex decompositions [BP79]. In our motivating example, the facets are labeled by semistandard Young tableaux, and the more general interior faces are labeled by Buch's setvalued semistandard tableaux. One vertex decomposition of this "Young tableau complex" parallels Lascoux's transition formula for vexillary double Grothendieck polynomials [La01, La03]. Consequently, we obtain formulae (both old and new) for these polynomials. In particular, we present a common generalization of the formulae of Wachs [Wa85] and Buch [Bu02], each of which implies the classical tableau formula for Schur polynomials. © 2008 The Hebrew University of Jerusalem.


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