The subdivision threshold for a graph F is the maximum number of edges, ex(n; FS), a graph of order n can have without containing a subdivision of F as a subgraph. We consider two instances: (i) F is the graph formed by a cycle C one vertex of which is adjacent to k vertices not on C, and (ii) F is
Genus distributions for two classes of graphs
β Scribed by Merrick L Furst; Jonathan L Gross; Richard Statman
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 663 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0095-8956
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π SIMILAR VOLUMES
## Let P(G; A) denote the chromatic polynomial of a graph G. G is chromatically unique if G is isomorphic to H for any graph H with P(H; A) = P(G; A). In this paper, we provide two new classes of chromatically unique graphs.
Skoviera, M., The maximum genus of graphs of diameter two, Discrete Mathematics 87 (1991) 175-180. Let G be a (finite) graph of diameter two. We prove that if G is loopless then it is upper embeddable, i.e. the maximum genus y,&G) equals [fi(G)/Z], where /3(G) = IF(G)1 -IV(G)1 + 1 is the Betti numbe
## Abstract Orderly algorithms for the generation of exhaustive lists of nonisomorphic graphs are discussed. The existence of orderly methods to generate the graphs with a given subgraph and without a given subgraph is established. This method can be used to list all the nonisomorphic subgraphs of