Power Sum Expansion of Chromatic Quasisymmetric Functions
Power Sum Expansion of Chromatic Quasisymmetric Functions
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色拟对称函数的幂和展开
DOI:
10.37236/4761
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Christos A. Athanasiadis
中科院分区:
文献类型:
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作者:
Christos A. Athanasiadis
The chromatic quasisymmetric function of a graph was introduced by Shareshian and Wachs as a refinement of Stanley's chromatic symmetric function. An explicit combinatorial formula, conjectured by Shareshian and Wachs, expressing the chromatic quasisymmetric function of the incomparability graph of a natural unit interval order in terms of power sum symmetric functions, is proven. The proof uses a formula of Roichman for the irreducible characters of the symmetric group.