Tableau posets and the fake degrees of coinvariant algebras
Tableau posets and the fake degrees of coinvariant algebras
复制标题
Tableau 偏序集和共变代数的假度
DOI:
10.1016/j.aim.2020.107252
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发表时间:
2020
影响因子:
1.7
通讯作者:
Swanson, Joshua P.
中科院分区:
文献类型:
--
作者:
Billey, Sara C.;Konvalinka, Matjaž;Swanson, Joshua P.
We introduce two new partial orders on the standard Young tableaux of a given partition shape, in analogy with the strong and weak Bruhat orders on permutations. Both posets are ranked by the major index statistic offset by a fixed shift. The existence of such ranked poset structures allows us to classify the realizable major index statistics on standard tableaux of arbitrary straight shape and certain skew shapes. By a theorem of Lusztig–Stanley, this classification can be interpreted as determining which irreducible representations of the symmetric group exist in which homogeneous components of the corresponding coinvariant algebra, strengthening a recent result of the third author for the modular major index. Our approach is to identify patterns in standard tableaux that allow one to mutate descent sets in a controlled manner. By work of Lusztig and Stembridge, the arguments extend to a classification of all nonzero fake degrees of coinvariant algebras for finite complex reflection groups in the infinite family of Shephard–Todd groups.
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
E. Stucky
通讯作者:
E. Stucky
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Connor Ahlbach;Joshua P. Swanson
通讯作者:
Joshua P. Swanson
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
A. Klyachko
通讯作者:
A. Klyachko
影响因子:
1.1
作者:
Billey, Sara C.;Konvalinka, Matjaž;Swanson, Joshua P.
通讯作者:
Swanson, Joshua P.
影响因子:
1.1
作者:
R. Ehrenborg;Margaret A. Readdy
通讯作者:
Margaret A. Readdy