A New Statistic on the Hyperoctahedral Groups
A New Statistic on the Hyperoctahedral Groups
复制标题
超八面体群的新统计
DOI:
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发表时间:
2013
影响因子:
0.7
通讯作者:
C. Voll
中科院分区:
文献类型:
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作者:
A. Stasinski;C. Voll
We introduce a new statistic on the hyperoctahedral groups (Coxeter groups of type B ), and give a conjectural formula for its signed distributions over arbitrary descent classes. The statistic is analogous to the classical Coxeter length function, and features a parity condition. For descent classes which are singletons the conjectured formula gives the Poincare polynomials of the varieties of symmetric matrices of fixed rank. For several descent classes we prove the conjectural formula. For this we construct suitable supporting sets for the relevant generating functions. We prove cancellations on the complements of these supporting sets using suitably defined sign reversing involutions.
影响因子:
1.7
作者:
Stasinski A
通讯作者:
Stasinski A