报告题目 (Title)：计数多项式与标记树的伽马正性（Gamma-Positivity of Enumerative Polynomials and Labeled Trees）
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：928-280-538
邀请人(Inviter)：王晓霞
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.