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【学术报告】Seminars on Discrete Mathematics: Symmetry breaking on graphs and groups
编辑:刘梦洁发布时间:2023年09月13日

报告人:黄弘毅英国布里斯托大学

间:202392614:30

点:海韵园实验楼105报告厅

内容摘要:

In this talk we will discuss two ways of breaking all the non-trivial symmetries of a graph: pointwise and setwise, which involve base sizes and distinguishing numbers of permutation groups, respectively. These two invariants have been investigated for many decades, finding a wide range of applications. I will report on my recent progress on determining base sizes of some primitive groups, with some connections to other interesting problems. In particular, I will give the first family of primitive groups arising in the O'Nan-Scott theorem for which the exact base size has been computed in all cases.

人简介

黄弘毅,英国布里斯托大学在读博士,国家留学基金委公派留学生,美国数学会《数学评论》评论员,澳洲组合数学会成员。研究方向为置换群论及相关组合结构。在J. Pure Appl. AlgebraAlgebr. Comb. 等期刊中发表学术成果。曾受剑桥大学、帝国理工学院、洛桑联邦理工、墨尔本大学等高校邀请进行学术成果展示。


联系人:陈继勇