讲座主题：Distance spectral characterization of mixed extensions of small graphs
主讲人：张小玲
工作单位：99精品视频在线观看
活动时间：2019年6月1日（周一）下午15:00-15:30
讲座地点：腾讯会议滨顿：448374359
主办单位：99精品视频在线观看数学与信息科学学院
内容摘要：
A mixed extension of a graph G is a graph H obtained from G by replacing each vertex ofG by a clique or a coclique, where vertices of H coming from different vertices of G areadjacent if and only if the original vertices are adjacent in G. In this paper,we determine all graphs with at mostthree distance eigenvalues unequal to -1 and -2, and find that these graphs areall mixed extensions of graphs on at most three vertices together with some particularmixed extensions of the path P_4.Moreover, we prove that some of these graphs are determined by their distance spectrum.
主讲人介绍：
张小玲，副教授，主要从事图论及其应用、图谱理论等方面的研究。目前以第一作者在《Linear Algebra and its Applications》、《DiscreteAppliedMathematics》、《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项，获得山东省高等学校优秀科研成果奖一等奖1项（第二位）。
