speaker：Prof. Yan Yang (Tianjin University, China)
Time：10 : 00 a.m., 17th April, 2019
Place：Room 427, Building 21
Title：The joint tree model for graph embedding
Abstract: the joint tree model for graph embedding. The basic idea of this model is to transfer the rotation system in Heffter-Edmonds's embedding model to a cyclically ordered string of letters. The joint tree model is very helpful when we study the graph embedding problems, such as minimum genus of a graph, genus distribution of a graph etc.