A notion of cross-perfect bipartite graphs
Milind Dawande · Information Processing Letters · 2003
In this note, we consider four quantities defined on a bipartite graph B: the cross-chromatic index χ*(B), the biclique number w*(B), the cross-free matching number m*(B) and the biclique edge covering number β*(B). We mention several applications of these numbers and define a notion of cross-perfect bipartite graphs. A duality between these numbers for the class of cross-perfect graphs is examined.