Title

On Graphs Having Equal Domination And Codomination Numbers

Authors

Authors

R. C. Brigham; R. D. Dutton; F. Harary;T. W. Haynes

Comments

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Abbreviated Journal Title

Util. Math.

Keywords

Mathematics, Applied; Statistics & Probability

Abstract

In a graph G = (V, E), a set S subset of V is a dominating set if each vertex of V - S is adjacent to at least one vertex in S. The domination number gamma(G) is the smallest order of a dominating set of G and the codomination number of G, written gamma(($) over bar), is the domination number of its complement. We investigate conditions under which graphs have equal domination and codomination numbers. In particular, we characterize graphs for which gamma(G) = gamma((G) over bar) = 2 and establish properties of graphs for which gamma(G) = gamma((G) over bar) greater than or equal to 3. Finally, we construct a family of graphs having gamma(G) = gamma((G) over bar).

Journal Title

Utilitas Mathematica

Volume

50

Publication Date

1-1-1996

Document Type

Article

Language

English

First Page

53

Last Page

64

WOS Identifier

WOS:A1996WB81300004

ISSN

0315-3681

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