报告题目 (Title)：Gamma-Positivity of Enumerative Polynomials and Labeled Trees（计数多项式与标记树的伽马正性）

报告人 (Speaker)：严慧芳 教授（浙江师范大学）

报告时间 (Time)：2025年11月10日（周一）16:00—17:00

报告地点：腾讯会议928-280-538

邀请人(Inviter)：王晓霞 教授

主办部门：理学院数学系

报告摘要：Gamma-positive enumerative polynomials arise frequently in Combinatorics and labeled trees play important roles in enumerative Combinatorics. In this talk, we will investigate the gamma-positivity of enumerative polynomials via labeled trees. In particular, we shall provide the combinatorial interpretation of the bi-gamma-coefficients of the 1/k-Eulerian polynomials by introducing actions on certain labeled trees and forests.