Degree conditions for graphs to be maximally k-restricted edge connected and super k-restricted edge connected
Degree conditions for graphs to be maximally k-restricted edge connected and super k-restricted edge connected
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图最大 k 限制边连通和超 k 限制边连通的度条件
DOI:
10.1016/j.dam.2014.10.027
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发表时间:
2015-03
影响因子:
1.1
通讯作者:
Zhao Nana
中科院分区:
文献类型:
--
作者:
Wang Shiying;Zhao Nana
For a connected graph G=(V, E), an edge set S⊆ E (G) is called a k-restricted edge cut of G if G− S is disconnected and every component of G− S has at least k vertices. The k-restricted edge connectivity of G, denoted by λ k (G), is defined as the cardinality of a minimum k-restricted edge cut. For two disjoint vertex subsets X, Y of G, define [X, Y]={x y∈ E (G): x∈ X, y∈ Y} and define ξ k (G)= min {|[X, X¯]|: X⊆ V (G),| X|= k, G [X] is connected}, where X¯= V (G)∖ X. G is λ k-optimal if λ k (G)= ξ k (G). Furthermore, G is super-λ k if every minimum k-restricted edge cut of G isolates a connected subgraph with order k. The k-restricted edge connectivity is an important index to estimate the reliability of networks. In this paper, some degree conditions for graphs to be maximally k-restricted edge connected and super k-restricted edge connected are given.
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DOI:
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发表时间:
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