报告题目：Directed Strongly Regular Dihedrants

报告人：冯荣权教授（北京大学教授、博士生导师）

摘要：An -directed strongly regular graph is a directed graph with  vertices satisfying (i) each vertex has  in-neighbors counted as both in and out-neighbors of the vertex; and (ii) the number of paths of length two from a vertex  to another vertex  is  if there is a directed edge from  to , and is  elsewise. Such graphs were introduced by Duval in 1988 as one of the possible generalization of classical strongly regular graphs to the directed case. Cayley graph on dihedral groups are called dihedrants. In this talk, several constructed of directed strongly regular dihedrants will be given and two special directed strongly regular dihedrants will be characterized.

报告时间：2018年4月13日（周五）上午 10：30-11：30

报告地点：数学科学学院三楼学术报告厅

报告人简介：冯荣权，国务院学位委员会数学学科评议组秘书、教育部大学数学课程教学指导委员会委员。现为北京数学会秘书长、中国密码学会理事。任《数学的实践与认识》副主编、《密码学报》、《数学进展》、《大学数学》和《数学通报》编委。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、教育部留学回国人员基金项目，在国内外核心期刊或会议上发表论文百余篇。