讲座主题：Edge-transitive bi-Cayley graphs

主讲人： 周进鑫

工作单位：北京交通大学

活动时间：2020年11月21日 10:10—11:00

讲座地点：腾讯会议会议ID：664 308 202

主办单位：烟台大学数学与信息科学学院

内容摘要：

A graph admitting a group H of automorphisms acting semi-regularly on the vertices with exactly two orbits is called a bi-Cayley graph over H. This generalisation of a Cayley graph gives a class of graphs that includes many important examples such as the Petersen graph, the Gray graph and the Hoffman-Singleton graph, and most of the known examples are actually edge-transitive. In this talk, I shall introduce some of our recent work regarding edge-transitive bi-Cayley graphs.

主讲人介绍：

周进鑫，北京交通大学教授、博士生导师。主要从事群与图方面的研究，目前在Journal of Combinatorial Theory Series B(A)、Combinatorica、Journal of Graph Theory、European Journal of Combinatorics、Journal of Algebraic Combinatorics、IEEE Transactions on Computers等图论、组合及计算机领域的一流期刊上发表论文70余篇。主持完成国家自然科学基金项目3项，在研1项。