ZHANG Xiaodong 

Shanghai Jiao Tong University

Detail:

The (bipartite) Turan number of a graph H, denoted by ex(n, H), is the maximum number of edges in a simple (bipartite) graph of order n which does not contain H as a subgraph. In this talk, we introduce the (bipartite) Turan numbers of forest and some complete bipartite graphs and obtain some exact (bipartite) Turan number of disjoint paths and small complete bipartite graphs.