报告题目：The Kelmans-Seymour conjecture on $K_5$-subdivisions

报告人：Professor Xingxing Yu
       Georgia Institute of Technology

报告时间：6月15日 16：00-17：00

报告地点：1218

摘要：Kelmans and Seymour independently conjectured in the 1970s that every 5-connected nonplanar graph
contains a subdivision of $K_5$. Ma and Yu proved that this conjecture holds for graphs containing 
$K_4^-$.I will discuss recent progress we made on this conjecture.This is joint work with Dawei He
and Yan Wang.

欢迎感兴趣的师生参加！