Forbidden Subgraphs for Planar Blict and Blitact Graphs
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Keywords:
Forbidden, inner point number, planar, outerplanar, k-minimally nonouterplanar, blict graph, blitact graphAbstract
Many graphs which are encountered in the study of graph theory are characterized by a type of configuration or subgraphs they possess. However, there are occasions when such graphs are more easily defined or described by the kind of subgraphs they are not permitted to contain. Such subgraphs are called forbidden subgraphs. In this paper, we present characterizations of graphs whose blict and blitact graphs are planar, outerplanar, minimally nonouterplanar and 2-minimally nonouterplanar in terms of forbidden subgraphs.
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