Configuration spaces, $operatorname{FS^{op}}$-modules, and Kazhdan-Lusztig polynomials of braid matroids
Configuration spaces, $operatorname{FS^{op}}$-modules, and Kazhdan-Lusztig polynomials of braid matroids
复制标题
配置空间、$operatorname{FS^{op}}$-模块和编织拟阵的 Kazhdan-Lusztig 多项式
DOI:
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Benjamin Young
中科院分区:
文献类型:
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作者:
N. Proudfoot;Benjamin Young
The equivariant Kazhdan-Lusztig polynomial of a braid matroid may be interpreted as the intersection cohomology of a certain partial compactification of the configuration space of n distinct labeled points in the plane, regarded as a graded representation of the symmetric group. We show that, in fixed cohomological degree, this sequence of representations of symmetric groups naturally admits the structure of an FS-module, and that the dual FS^op-module is finitely generated. Using the work of Sam and Snowden, we give an asymptotic formula for the dimensions of these representations and obtain restrictions on which irreducible representations can appear in their decomposition.
影响因子:
0.8
作者:
Ardila F
通讯作者:
Ardila F