Power Sum Expansion of Chromatic Quasisymmetric Functions

[摘要] 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 quasisymmet

[学科分类] 离散数学和组合数学

[关键词] Graph coloring;Quasisymmetric function;Power sum symmetric function;Interval order;Descent;Acyclic orientation