Perfect matchings in paired domination vertex critical graphs
Shenwei Huang,
Erfang Shan () and
Liying Kang
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Shenwei Huang: Shanghai University
Erfang Shan: Shanghai University
Liying Kang: Shanghai University
Journal of Combinatorial Optimization, 2012, vol. 23, issue 4, No 9, 507-518
Abstract:
Abstract A vertex subset S of a graph G=(V,E) is a paired dominating set if every vertex of G is adjacent to some vertex in S and the subgraph induced by S contains a perfect matching. The paired domination number of G, denoted by γ pr (G), is the minimum cardinality of a paired dominating set of G. A graph with no isolated vertex is called paired domination vertex critical, or briefly γ pr -critical, if for any vertex v of G that is not adjacent to any vertex of degree one, γ pr (G−v)
Keywords: Matching; Perfect matching; Factor-critical; Paired domination vertex critical (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1007/s10878-010-9368-9
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