Linear Time Recognition of Equimatchable Split Graphs

Abstract

A maximal matching $M$ that consists of independent edges is a subgraph of a simple and undirected graph $G$ for which $G-M$ forms an independent set. A graph $G$ is called equimatchable if all maximal matchings have the same number of edges. On the other hand, $G$ is called as a split graph if its vertices can be partitioned into two subsets for which one of them forms a clique whereas the second forms an independent set. We will give a linear time algorithm for recognition of equimatchable split graphs.

8 pages