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A graph G=(V,E) is a unipolar graph if there exists a partition V=V1∪V2 such that V1 is a clique and V2 induces the disjoint union of cliques. The complement-closed class of generalized split graphs contains those graphs G such that either G or the complement of G is unipolar. Generalized split graphs are a large subclass of perfect graphs. In fact, it has been shown that almost all C5-free (and hence,...
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