【和山数学论坛第428期】西北工业大学王力工教授学术讲座

信息来源:   点击次数:  发布时间:2024-07-04


一、报告题目:The maximum signless Laplacian spectral radius of graphs without 2

二、报告人:王力工 教授

三、时 间:202476(周六) 上午 10:00-11:00

四、地  点:闻理园A4-216


报告摘要:For a given , a graph is said to be -free if it does not contain as a subgraph. We use 2 to denote the disjoint union of two triangles. In spectral extremal graph theory, it is interesting to determine the maximum (signless Laplacian) spectral radius of -free graphs. In this talk, we introduce some new results about the maximum (signless Laplacian) spectral radius of -free graphs. We also characterize the unique extremal graph with the maximum signless Laplacian spectral radius among all 2-free graphs of order n ≥ 44. This is a joint work with Yanting Zhang.


报告人简介:王力工,西北工业大学教授、博士生导师,荷兰Twente大学博士,研究方向为图论及其应用,主要研究包括:图谱理论,有向图与超图的谱性质,整图的刻画,图的Turán数,图的Gallai-Ramsey数等,主持国家自然科学基金多项,在《Journal of Graph Theory》、《Discrete Mathematics》、《Discrete Applied Mathematics》、《Electronic Journal of Combinatorics》、《Linear Algebra and its Applications》等国内外重要学术期刊发表SCI论文120多篇。


欢迎广大师生参加!联系人:王狄建、龚世才