报告人：张志硕（澳大利亚墨尔本大学）

时 间：2024年12月9日14:30

地 点：海韵园教学楼405

内容摘要:

We say that a group is a 4-HAT-stabilizer if it is the vertex stabilizer of some connected 4-valent half-arc-transitive graph. In 2001, Marušič and Nedela proved that every a 4-HAT-stabilizer must be a concentric group. However, over the past two decades, only a very small proportion of concentric groups have been shown to be 4-HAT-stabilizers. In this talk, we introduce a theory that provides a general framework for determining whether a concentric group is a 4-HAT-stabilizer. With this approach, we significantly extend the known list of 4-HAT-stabilizers.

个人简介：

张志硕，澳大利亚墨尔本大学博士生。本科毕业于北京航空航天大学华罗庚班。研究方向为代数图论，集中于四度半弧传递图点稳定子的刻画。曾在Forum Math. Sigma等期刊发表学术文章。

联系人：陈继勇