今邀请上海交通大学张晓东教授来我校访问交流,届时将与我校有关专家学者和万哲先实验班进行学术交流。欢迎广大师生踊跃参加!
报告题目:数学与交叉科学系列报告之一:小世界网络的聚类系数与直径
报告时间:2020年11月20日(周五)上午10:10
报告地点:腾讯会议(ID:955 324 813)
附件:张晓东教授简介
数学与统计学院
科学技术处
2020年11月16日
附件
张晓东教授简介
张晓东,上海交通大学数学科学学院教授、博士生导师。1998年6月在中国科学技术大学获得理学博士学位。曾在以色列理工学院(得到Lady Davis Postdoctoral fellowship 资助)和智利大学做博士后、在美国加州大学圣地亚哥分校等校做访问学者。多次主持和参加国家自然科学基金等项目。已经在国内外SCI期刊发表140多篇论文,出版专著一本。担任中国运筹学会图论组合分会副理事长和2个国际杂志编委。目前主要研究领域为谱图理论,随机图与复杂网络,组合矩阵论等。
摘要:The small-world network, proposed by Watts and Strogatz, has been extensively studied for the past over ten years. In this report, a
generalized small-world network is proposed, which extends several
small-world network models. Further, some properties of the generalized small-world network, such as the degree distribution and the isoperimetric number, have been investigated. These results are used to present a lower and an upper bounds for the cluster coefficient and the diameter of the generalized small-world network,respectively. In other words, we prove mathematically that the small-world network possesses large clustering coefficient and small diameter. ( This work is jointed with Lei Gu and Huilin Huang )