报告时间:2024年10月24日 18:40开始
报 告 人:周进鑫(北京交通大学 教授)
报告地点:腾讯会议 639828654
报告题目:On mixed dihedral groups and 2-arc-transitive normal covers of K_{2^n,2^n}
报告摘要:In this talk, I will introduce the notation of a mixed dihedral group, which is a group $H$ with two disjoint subgroups $X$ and $Y$, each elementary abelian of order $2^n$, such that $H$ is generated by $X\cup Y$, and $H/H'\cong X\times Y$. We will give a graph theoretic characterization of this family of groups, and this is then used to investigate the $2$-arc-transitive normal covers of the `basic' graph $K_{2^n,2^n}$. (This is a joint work with Daniel R. Hawtin and Cheryl E. Praeger)
报告人简介:周进鑫,现为北京交通大学博彩导航
教授、博导。主要致力于图的对称性及相关问题研究,在凯莱图、双凯莱图及齐性图方面取得了系列理论创新成果,解决了包括Godsil、Seress、Li、Marušič、徐明曜等国际知名学者提出的若干公开问题。在JCTA(B)、Combinatorica、J. Algebra等组合数学、图论、代数学领域权威期刊发表100余篇。先后主持国家自然科学基金青年项目、面上项目、杰出青年项目等6项。