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数学院留学归国人员系列学术报告

澳门新葡新京: 时间:2020-05-26 点击数:

数学院留学归国人员系列学术报告

报告题目:Distance spectral characterization of mixed extensions of small graphs

报告人:  张小玲 教授 烟台大学数学与信息科学学院)

报告时间: 202061日(周一)下午15:00-15:30

报告地点: 腾讯会议 ID448374359

内容摘要:

A mixed extension of a graph G is a graph H obtained from G by replacing each vertex of G by a clique or a coclique, where vertices of H coming from different vertices of G are adjacent if and only if the original vertices are adjacent in G. In this paper, we determine all graphs with at most three distance eigenvalues unequal to -1 and -2, and find that these graphs are all mixed extensions of graphs on at most three vertices together with some particular mixed extensions of the path P_4.Moreover, we prove that some of these graphs are determined by their distance spectrum.

报告人简介:

张小玲教授,主要从事图论及其应用图谱理论方面的研究。目前以第一澳门新葡新京在《Linear Algebra and its Applications》、《Discrete Applied Mathematics》、《Discrete Mathematics》、《Linear and Multilinear Algebra》等国际期刊上发表 SCI 收录论文 13 篇。主持完成国家自然科学基金天元基金、青年项目各1项,主持完成山东省自然科学基金青年项目1项,参与国家自然科学基金面上基金2,获得山东省高等学校优秀科研成果奖一等奖1项位)

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