报告题目:Inertia and spectral symmetry of eccentricity matrices of clique trees
报 告 人:王建锋教授(山东理工大学)
报告时间:2022年12月1日 14:30
报告地点:腾讯会议(402721869)
报告摘要:
A clique tree is a conected graph whose blocks are all cliques. Let CTbe set of clique trees G where each block contains at most two cut-vertices of G In this report, we mainly investigate the structural and algebraic properties of clique trees G∈CT. We firstly show that the eccentricity matrices of clique trees G∈CT are irreducible. Moreover, we completely determine the inertia of clique trees G∈CT, and finally prove that the ε-spectrum of a clique tree G∈CT is symmetric with respect to the origin if and only if G has an odd diameter and exactly two adjacent central vertices.
报告人简介:
王建锋,山东理工大学数学与统计学院教授、副院长,在Advances in Applied Mathematics、The Electronic Journal of Combinatoric、Discrete Mathematics、Journal of Algebraic Combinatorics、Algebra Colloquium等发表论文70余篇,现主持一项国家基金面上项目,山东省高等学校“青创人才引育计划”团队负责人,主持和参与完成多项国家、中国博士后和省基金。提出的问题和图离心率矩阵谱的研究分别得到美国、荷兰、韩国和印度理工学院、贝尔格莱德大学等国内外同行的解决和跟进研究,特别是提出的关于符号5正则图的相关问题得到美国普林斯顿大学Alon教授的关注研究;应邀参加塞尔维亚第14届数学大会作邀请报告等。现任CSIAM信息和通讯领域的数学专委会委员等。