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arXiv:2312.01417 [math.CO]AbstractReferencesReviewsResources

Lascoux polynomials and subdivisions of Gelfand-Zetlin polytopes

Ekaterina Presnova, Evgeny Smirnov

Published 2023-12-03Version 1

We give a new combinatorial description for stable Grothendieck polynomials in terms of subdivisions of Gelfand-Zetlin polytopes. Moreover, these subdivisions also provide a description of Lascoux polynomials. This generalizes a similar result on key polynomials by Kiritchenko, Smirnov, and Timorin.

Comments: 21 pages, color pictures
Categories: math.CO, math.RT
Subjects: 05E05, 14N10, 22E47
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