Counting factorizations of Coxeter elements into products of reflections
Counting factorizations of Coxeter elements into products of reflections
复制标题
将 Coxeter 元素因式分解计算为反射乘积
DOI:
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发表时间:
2012
期刊:
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通讯作者:
Christian Stump
中科院分区:
文献类型:
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作者:
G. Chapuy;Christian Stump
In this paper, we count factorizations of Coxeter elements in well‐generated complex reflection groups into products of reflections. We obtain a simple product formula for the exponential generating function of such factorizations, which is expressed uniformly in terms of natural parameters of the group. In the case of factorizations of minimal length, we recover a formula due to P. Deligne, J. Tits and D. Zagier in the real case and to D. Bessis in the complex case. For the symmetric group, our formula specializes to a formula of D. M. Jackson.