Bipartite Biregular Cages and Block Designs

Gabriela Araujo-Pardo, Alejandra Ramos-Rivera, Robert Jajcay

A bipartite biregular $(n,m;g)$-graph $G$ is a bipartite graph of even girth $g$ having the degree set $\{n,m\}$ and satisfying the additional property that the vertices in the sam…