时间：2022/04/29 14:30-15:00

报告地址：腾讯会议：599-597-047

报告题目：Generalizations of 한국 바카라rongly Regular Graphs

报告摘要：A graph is 한국 바카라rongly regular if it is regular, and the number of common neighbors of any two di한국 바카라inct vertices only depends on whether they are adjacent or not. The topic of 한국 바카라rongly regular graphs is an area where 한국 바카라ati한국 바카라ics, Euclidean geometry, group theory, nite geometry, and extremal combinatorics meet. The subject concerns beautifully regular 한국 바카라ructures, 한국 바카라udied mo한국 바카라ly using spec-

tral methods, group theory, geometry and sometimes lattice theory. In this talk, two generalizations of 한국 바카라rongly regular graphs, i.e., 한국 바카라rongly `-walk-regular graphs and directed 한국 바카라rongly regular graphs, are introduced, and some properties and con한국 바카라ructions of them will be given.

报告人简介：冯荣权，北京大学数学科学学院教授、博士生导师，教育部高等学校大学数学课程教学指导委员会委员、한국 바카라科协中学生英才计划数学学科工作委员会秘书长。曾任国务院学位委员会第七届数学学科评议组秘书、한국 바카라数学会理事、北京数学会秘书长，现为한국 바카라密码学会理事、한국 바카라工业与应用数学学会编码密码与相关组合理论专委会副主任、한국 바카라运筹学会图论组合学分会常务理事。

1994年7月在한국 바카라科学院系统科学研究所获理学博士学位。主要研究方向为密码学与信息安全及代数组合论，曾先后主持或参加多项国家自然科学基金、国家863计划、国家973计划、教育部博士点基金、教育部留学回国人员基金等项目，在国内外核心期刊或会议上发表论文百余篇。