We prove a new upper bound on the independent domination number of graphs in terms of the number of vertices and the minimum degree. This bound is slightly better than that of Haviland (1991) and settles the case 6 = 2 of the corresponding conjecture by Favaron (1988). @ 1998 Elsevier Science B.V. A
On the domination number of Hamiltonian graphs with minimum degree six
β Scribed by Hua-Ming Xing; Johannes H. Hattingh; Andrew R. Plummer
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 177 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0893-9659
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β¦ Synopsis
The domination number of G, denoted by Ξ³ (G), is the minimum cardinality of a dominating set of G. We prove that if G is a Hamiltonian graph of order n with minimum degree at least six, then Ξ³ (G) β€ 6n 17 .
π SIMILAR VOLUMES
The maximum number of cutvertices in a connected graph of order n having minimum degree at least 6 is determined for 6 > 5.
Let G be a finite simple graph on n vertices with minimum degree 6(G) 3 6 (n = 6 (mod 2)). Let max(k, G) denote the set of all k-subsets A E V(G) such that the number of edges in the induced subgraph (A) is a maximum. We prove that for some i E (0, 1.2, . . . ). Analogous edge density constraints, r