Toward Permutation Bases in the Equivariant Cohomology Rings of Regular Semisimple Hessenberg Varieties
Toward Permutation Bases in the Equivariant Cohomology Rings of Regular Semisimple Hessenberg Varieties
复制标题
正则半单Hessenberg簇等变上同调环中的排列基
DOI:
10.1007/s44007-021-00016-5
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Tymoczko, Julianna
中科院分区:
文献类型:
--
作者:
Harada, Megumi;Precup, Martha;Tymoczko, Julianna
Recent work of Shareshian and Wachs, Brosnan and Chow, and Guay-Paquet connects the well-known Stanley–Stembridge conjecture in combinatorics to the dot action of the symmetric groupon the cohomology ringsof regular semisimple Hessenberg varieties. In particular, in order to prove the Stanley–Stembridge conjecture, it suffices to construct (for any Hessenberg functionh) a permutation basis ofwhose elements have stabilizers isomorphic to Young subgroups. In this manuscript, we give several results which contribute toward this goal. Specifically, in some special cases, we give a new, purely combinatorial construction of classes in theT-equivariant cohomology ringwhich form permutation bases for subrepresentations in. Moreover, from the definition of our classes it follows that the stabilizers are isomorphic to Young subgroups. Our constructions use a presentation of theT-equivariant cohomology ringsdue to Goresky, Kottwitz, and MacPherson. The constructions presented in this manuscript generalize past work of Abe–Horiguchi–Masuda, Chow, and Cho–Hong–Lee.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Julianna Tymoczko
通讯作者:
Julianna Tymoczko
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Harada;Julianna Tymoczko
通讯作者:
Julianna Tymoczko
影响因子:
--
作者:
M. Harada;Martha Precup
通讯作者:
Martha Precup
DOI:
--
发表时间:
1992
期刊:
Canadian Journal of Mathematics - Journal Canadien de Mathematiques
影响因子:
--
作者:
J. Stembridge
通讯作者:
J. Stembridge
影响因子:
1.7
作者:
Soojin Cho;Jaehyun Hong;Eunjeong Lee
通讯作者:
Eunjeong Lee