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arXiv 0905.2650math.COmath.RT
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超八面体群中最长约化字的循环筛选

Cyclic sieving for longest reduced words in the hyperoctahedral group

T. Kyle Petersen, Luis Serrano

摘要:

我们证明超八面体群中最长元素的约化表达式集合R(w_0)表现出循环筛选现象。更具体地说,R(w_0)具有一个自然的循环行动,通过移动一个字的第一个字母到末尾,我们表明,这个行动的轨道结构是由生成函数的主要指标R(w_0)编码。

英文摘要:

We show that the set R(w_0) of reduced expressions for the longest element in the hyperoctahedral group exhibits the cyclic sieving phenomenon. More specifically, R(w_0) possesses a natural cyclic action given by moving the first letter of a word to the end, and we show that the orbit structure of this action is encoded by the generating function for the major index on R(w_0).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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