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期刊论文
Generalization of matching extensions in graphs
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Let G be a graph with vertex set V (G). Let n, k and d be non-negative integers such that n+2k+d ≤ |V (G)|−2 and |V (G)|−n−d is even. A matching which covers exactly |V (G)|−d vertices of G is called a defect-d matching of G. If when deleting any nvertices of G the remaining subgraph contains a matching of k edges and every k-matching can be extended to a defect-d matching, then G is called a (n, k, d)−graph. In this paper a characterization of (n, k, d)-graphs is given and several properties (such as connectivity, minimum degree, hierarchy, etc.) of (n, k, d)-graphs are investigated.
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