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A note on dominated spaces

โœ Scribed by C. R. Borges


Publisher
Akadmiai Kiad
Year
1991
Tongue
English
Weight
205 KB
Volume
58
Category
Article
ISSN
1588-2632

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๐Ÿ“œ SIMILAR VOLUMES


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โœ S. Deo; R. Krishan ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Akadmiai Kiad ๐ŸŒ English โš– 483 KB
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For a graph G, let ~'(G), 3,z(G), i(G) and ir(G) denote the domination, total domination, independent domination and irredundance numbers of G, respectively. The following conjectures due to Robyn Dawes are proved: G)<~p and (ii) i(G)+ ~/z(G)~2. It is also shown that (iii) 3,t(G) ~<2ir(G) and (iv) 3

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Nous prouvons une conjecture due & Bondy et Fan. Un cycle C d'un graphe G est dit m-dominant si tout sommet de V(G -C) est a distance au plus m de C. Notre r&t&at est: si G est k-connexe, et si G n'a pas de cycle m-dominant, alors il existe un stable de cardinal k + 1, dont les sommets sont deux 3 d

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Let M be a finite subset of vertices of a connected graph G and assume that every vertex v E M has a dominating radius r(v)E N U {0}. A complete subgraph C is an r-dominating clique of M if every vertex vEM is at distance at most r(v) from C. Even for r(v)~ 1 the problem whether or not a given graph