On The Number Of Labeled Bipartite Graphs

Abdullah Atmaca, A. Yavuz Oruc

Let $I$ and $O$ denote two sets of vertices, where $I\cap O=\varnothing$, $|I|=n$, $|O|=r$, and $B_u(n,r)$ denote the set of unlabeled graphs whose edges connect vertices in $I$…