1、题目：How does the small circumference effect a graph to have Hamiltonian properties

报告人：熊黎明 教授 北京理工大学

报告时间：5月27号下午2：30-3：30 #腾讯会议：859-454-999

https://meeting.tencent.com/dm/a7h2trN00XbR

摘要：Many research results on circumference，most of them are related to their low pounds since this shows how closed a graph to be hamiltonian. Considering small circumference is to be a method to deal with many cases discussion. In this talk, we mainly focus on the relationship between small circumference of a graph and hamiltonian property of graphs and show how the small circumference effects a graph to have Hamiltonian properties.

2、报告题目：Integer Ramsey Theory

报告人：毛亚平 教授 青海师范大学

报告时间：5月27号下午3：30-4：30 #腾讯会议：859-454-999

https://meeting.tencent.com/dm/a7h2trN00XbR

摘要：Integer Ramsey Theory on the Integers covers a variety of topics from the field of Ramsey theory, limiting its focus to the set of integers. In this talk, we will introduce some short history of arithmetic progression and Ramsey coloring, Rado numbers involving monochromatic solutions of equations. It includes some recent work by us on this topic.