应兰州大学数学与统计学院王晓萌副教授邀请,墨尔本大学数学与统计学院夏彬绉博士将于2025年7月9日到7月14日访问兰州大学并进行学术报告,诚邀全校师生参加!
报告题目:Groups as the automorphism groups of graphs and digraphs
报告地点:理工楼601
报告时间:7月13日(下午3:30)
腾讯会议:780-9527-8350(密码:147258)
报告摘要:In 1936, Kőnig conjectured that every finite group can be represented as the automorphism group of a finite graph. This was answered in the affirmative by Frucht in 1939. Since then, this problem has been explored under various constraints on the graph. A particularly interesting case arises when the graph is vertex-transitive and has the same order as the group; such a graph is known as a Graphical Regular Representation (GRR). In the 1970s, a series of papers established which groups admit GRRs. In this talk I will first provide an overview of these classic results and then discuss some recent developments, including asymptotic enumeration, GRRs with specific valencies, and new variations of GRRs.
报告人简介
夏彬绉,2009年本科毕业于浙江大学,2014年获得北京大学博士学位。2014-2016年于北京国际数学研究中心从事博士后研究,2016-2017年西澳大利亚大学Research associate,2017年起任职于墨尔本大学,国际组合数学与应用学会(ICA)2017年Kirkman奖获得者,2025年Hall奖获得者。主要研究代数图论、组合学与置换群论,在诸多国际杂志(如Mem Amer Math Soc, Proc Lond Math Soc, J Lond Math Soc, Israel J. Math等)发表论文60余篇。
甘肃省计算数学基础学科研究中心
数学与统计学院
萃英学院
2026年7月13日