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理论科学研究院-同伦论研讨班丨A categorial study of graph colorings
时间
2022年6月23日（星期四）
16:00-17:00
地点
ZOOM
主持
古星博士
受众
全体师生
分类
学术与研究
理论科学研究院-同伦论研讨班丨A categorial study of graph colorings
时间：2022年6月23日（星期四）16:00-17:00
Time：16:00-17:00, Thursday, June 23rd, 2022
地点：ZOOM
Venue: ZOOM
会议号/ZOOM ID：867 9822 9963
密码/Passcode：454119
主持人：理论科学研究院 古星博士
Host：Dr. Xing Gu, Institute for Theoretical Sciences
主讲人：西交利物浦大学 刘晔博士
Speaker：Dr. Ye Liu, Xi'an Jiaotong-Liverpool University
主讲人简介/Biography：
Dr. Ye Liu obtained his PhD from Hokkaido University in 2016. Now he is an assistant professor at Xi'an Jiaotong-Liverpool University. His research interest is the mathematics around hyperplane arrangements, especially related topology and combinatorics.
报告摘要/Abstract：
The chromatic polynomial of a finite simple graph is one of the most important invariants of the graph. Using the concept combinatorial species by Joyal, we introduce a categorification of chromatic polynomial, called chromatic species. After presenting a formula of the chromatic species up to categorial equivalence in terms of stable partitions of the graph, we discuss some new enumerative results as well as some further questions. Joint work with Masahiko Yoshinaga (Osaka University).
