报告时间:2024年9月12日 19:00开始
报 告 人:李斌龙(西北工业大学 教授)
报告地点:腾讯会议 448145862
报告题目:On the edge-color threshold of triangles in tripartite graphs
报告摘要:Let G and H be two graphs. The Turán number ex(G, H) is the maximum number of edges of a subgraph of G without copies of H; and the anti-Ramsey number ar(G, H) is the maximum number of colors of an edge-coloring of G without rainbow copies of H. We define the edge-color threshold of H in G, denoted by ec(G, H), as the maximum sum of numbers of edges and colors of an edge-coloring of a subgraph of G without rainbow copies of H, i.e., ec(G, H)=max{e(F)+c(F): F⊆G and Fc is rainbow H-free}. In this talk, we will study the edge-color threshold of triangles in complete tripartite graphs.
报告人简介:李斌龙,西北工业大学教授,博士生导师。2012年博士毕业于荷兰特文特大学,曾在捷克西波希米亚大学作博士后,在丹麦技术大学访学。主要研究方向为结构图论。主持国家自然科学基金青年项目、面上项目各一项。在 JCTB, J. Graph Theory, European J. Combinatorics等期刊发表论文60余篇。