A graph G is perfect if for every induced subgraph H of G the chromatic number x(H) equals the largest number w ( H ) of pairwise adjacent vertices in H. Berge's famous Strong Perfect Graph Conjecture asserts that a graph G is perfect if and only if neither G nor its complement C contains an odd cho
Proof of a conjecture on irredundance perfect graphs
β Scribed by Lutz Volkmann; Vadim E. Zverovich
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 157 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0364-9024
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β¦ Synopsis
Abstract
Let ir(G) and Ξ³(G) be the irredundance number and the domination number of a graph G, respectively. A graph G is called irredundance perfect if ir(H)=Ξ³(H), for every induced subgraph H of G. In this article we present a result which immediately implies three known conjectures on irredundance perfect graphs. Β© 2002 Wiley Periodicals, Inc. J Graph Theory 41: 292β306, 2002
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