应pc加拿大预测准确率徐守军教授和高毓平博士邀请,美国伊利诺伊州立大学(Illinois State University)数学系助理教授镡松龄将于2020年7月16日进行线上学术报告。
报告题目:Antimagic orientation of graphs with minimum degree at least 33
报告时间:7月16日上午10:00
会议链接:https://meeting.tencent.com/s/Ad3ihqA0ugGY
腾讯会议ID:310764228
密码:0716
报告摘要:An antimagic labeling of a directed graph $D$ with $n$ vertices and $m$ arcs is a bijection from the set of arcs of $D$ to the integers $\{1,\cdots,m\}$ such that all $n$ oriented vertex sums are pairwise distinct, where an oriented vertex sum is the sum of labels of all arcs entering that vertex minus the sum of labels of all arcs leaving it. A graph $G$ has an antimagic orientation if it has an orientation which admits an antimagic labeling. Hefetz, M{\"{u}}tze, and Schwartz conjectured that every connected graph admits an antimagic orientation. We show that every bipartite graph with no vertex of degree 0 or 2 admits an antimagic orientation and every graph $G$ with $\delta(G)\ge 33$ admits an antimagic orientation.
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报告人简介
镡松龄,美国伊利诺伊州立大学助理教授,主要研究方向为结构图论、图染色与极值图论。镡松龄于2015年从美国佐治亚州立大学获得博士学位,2015-2018年在美国范德堡大学从事博士后研究工作。截止目前,在J. Combinatorial Theory Ser. B,J. Graph Theory等图论与组合方向的顶级期刊发表高水平学术论文二十几篇。
甘肃省应用数学与复杂系统重点实验室
pc加拿大预测准确率
萃英学院
2020年7月14日