学 术 报 告

报告题目：Some spectral extremal results for 카지노 바카라 게임graphs

报告人：常安 教授（福州大学）

报告时间：周日（10月13号）下午3点—4点

报告地点：数统院307报告厅

数学与统计学院

2019.9.27

报告摘要： Let F be a graph. A 카지노 바카라 게임graph is called Berge F if it can be obtained by replacing each edge in F by a 카지노 바카라 게임edge containing it. Given a family of graphs , we say that a 카지노 바카라 게임graph H is Berge -free if for every F \in H does not contain a Berge F as a sub카지노 바카라 게임graph. In this talk, we investigate the connections between spectral radius of the adjacency tensor and structural properties of a 카지노 바카라 게임graph. In particular, a spectral version of Turán-type result on linear k-uniform 카지노 바카라 게임graphs is obtained by using spectral methods, including a tight result on Berge C4-free linear 3-uniform 카지노 바카라 게임graphs.

报告人简介：常安， 福州大学教授，博士生导师。现任中国数学会组合数学与图论专业委员会副主任、福建省运筹学会理事长。主要从事图论领域中图的谱理论及应用研究。已在国内外专业期刊发表研究论文 60 多篇，承担或参与了包括国家重点研究计划（973 计划）项目课题、国家自然科学基金重点项目在内的十余项国家级카지노 바카라 게임项目的研究工作。2004年获福建省科学技术二等奖。