On Cyclic Descents for Tableaux
On Cyclic Descents for Tableaux
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关于 Tableaux 的循环下降
DOI:
10.1093/imrn/rny280
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发表时间:
2017
影响因子:
1
通讯作者:
Yuval Roichman
中科院分区:
文献类型:
--
作者:
R. Adin;V. Reiner;Yuval Roichman
The notion of descent set, for permutations as well as for standard Young tableaux (SYT), is classical. Cellini introduced a natural notion of cyclic descent set for permutations, and Rhoades introduced such a notion for SYT—but only for rectangular shapes. In this work we define cyclic extensions of descent sets in a general context and prove existence and essential uniqueness for SYT of almost all shapes. The proof applies nonnegativity properties of Postnikov’s toric Schur polynomials, providing a new interpretation of certain Gromov–Witten invariants.