A characterization of substar graphs
The intersection graphs of stars in some tree are known as substar graphs. In this paper we give a characterization of substar graphs by the list of minimal forbidden induced subgraphs. This corrects a flaw in the main result of Chang, Jacobson, Monma and West (1993) and this leads to a different list of minimal forbidden induced subgraphs.
substar graph intersection graph chordal graph