Bipartite Toughness and k‐Factors in Bipartite Graphs
Guizhen Liu, Jianbo Qian, J. Z. Sun, Rui Xu · International Journal of Mathematics and Mathematical Sciences · 2008
We define a new invariant tB(G) in bipartite graphs that is analogous to the toughness t(G) and we give sufficient conditions in term of tB(G) for the existence of k‐factors in bipartite graphs. We also show that these results are sharp.