»ã±¨±êÌâ (Title)£ºGamma-Positivity of Enumerative Polynomials and Labeled Trees£¨¼ÆÊý¶àÏîʽÓëÏóÕ÷Ê÷µÄÙ¤ÂíÕýÐÔ£©

»ã±¨ÈË (Speaker)£ºÑϻ۷¼ ½ÌÊÚ£¨Õ㽭ʦ·¶´óѧ£©

»ã±¨¹¦·ò (Time)£º2025Äê11ÔÂ10ÈÕ£¨ÖÜÒ»£©16:00¡ª17:00

»ã±¨µØÖ·£ºÌÚѶ»áÒé928-280-538

Ô¼ÇëÈË(Inviter)£ºÍõÏþϼ ½ÌÊÚ

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»ã±¨ÌáÒª£ºGamma-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.