报告时间:2025年9月6日 上午9:30开始
报 告 人:陈敏教授(浙江师范大学)
报告地点:9-113
报告题目:Progress on 2-distance colorings of planar graphs
报告摘要: Aproper k-coloring of a graph G is a 2-distance k-coloring of G if each pair of vertices with distance no more than 2 are colored differently. In this talk, we shall prove that every planar graph with ∆ ≥ 8 is 2-distance (2∆ + 6)-colorable. This improves a previous result stating that every planar graph with ∆ ≥ 9 is 2-distance (2∆ + 7)-colorable.
报告人简介:陈敏,法国波尔多大学博士,苏州大学博士,现为浙江师范大学数学科学学院教授,校特聘教授,博士生导师,曾任数学与计算机科学学院副院长和数学系主任,现为浙江师范大学教务处处长。第九届世界华人数学家大会(ICCM 2022)45分钟特邀报告人。在J. Combin. Theory Ser. B、European J. Combin.、J. Graph Theory等发表SCI一区TOP论文等70余篇。