Contractible subgraphs in k‐connected graphs
Contractible subgraphs in k‐connected graphs
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k连通图中的可收缩子图
DOI:
10.1002/jgt.20227
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发表时间:
2007
影响因子:
0.9
通讯作者:
Xiaoyan Zhang
中科院分区:
文献类型:
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作者:
Zemin Jin;Xingxing Yu;Xiaoyan Zhang
For a graph G we define a graph T(G) whose vertices are the triangles in G and two vertices of T(G) are adjacent if their corresponding triangles in G share an edge. Kawarabayashi showed that if G is a k‐connected graph and T(G) contains no edge, then G admits a k‐contractible clique of size at most 3, generalizing an earlier result of Thomassen. In this paper, we further generalize Kawarabayashi's result by showing that if G is k‐connected and the maximum degree of T(G) is at most 1, then G admits a k‐contractible clique of size at most 3 or there exist independent edges e and f of G such that e and f are contained in triangles sharing an edge and G/e/f is k‐connected. © 2006 Wiley Periodicals, Inc. J Graph Theory 55: 121–136, 2007
DOI:
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发表时间:
2003
期刊:
Discrete Math. 267, no.1-3
影响因子:
--
作者:
Ando;Kiyoshi;Kawarabayashi;Ken-ichi
通讯作者:
Ken-ichi
DOI:
--
发表时间:
2002
期刊:
J.Combin. Theory Ser.B 85,no.2
影响因子:
--
作者:
K.Kawarabayashi;A.Nakamoto;Y.Oda;K.Ota;S.Tazawa;M.Watanabe;K.Kawarabayashi
通讯作者:
K.Kawarabayashi