Extension of Hereditary Classes with Substitutions

  title={Extension of Hereditary Classes with Substitutions},
  author={Igor E. Zverovich},
  journal={Discrete Applied Mathematics},
Let G and H be graphs. A substitution of H in G instead of a vertex v∈V (G) is the graph G(v → H), which consists of disjoint union of H and G − v with the additional edge-set {xy: x∈V (H); y∈NG(v)}. For a hereditary class of graphs P, the substitutional closure of P is de4ned as the class P∗ consisting of all graphs which can be obtained from graphs in P by repeated substitutions. Let P be an arbitrary hereditary class for which a characterization in terms of forbidden induced subgraphs is… CONTINUE READING


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