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新疆大学数学与系统科学学院
Published:2013
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[1]曹香兰,艾尔肯·吾买尔.广义Mycielskian图的连通度(英文)[J].新疆大学学报(自然科学版),2013,30(02):127-132.
曹香兰, 艾尔肯·吾买尔. 广义Mycielskian图的连通度(英文)[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2013, 30(2): 127-132.
Mycieski定义了一个图的运算即把一个图G变换为一个称为G的Mycielskian图的新图μ(G).广义Mycielskian图μm(G)(m≥0)是图的Mycielskian图的一个自然推广.本文证明对任意非平凡连通图G有κ(μm(G))=min{δ(G)+1
(m+1)κ(G)+1}
而且对于m
i≥1
λ(μm(G))=λ(G)+i当且仅当δ(G)=λ(G)+i 1
其中κ(G)
λ(G)和δ(G)分别为图G的连通度
边连通度和最小度.
Mycielski introduced a new graph transformation that transforms a graph G into a new graph μ(G)
which is called the Mycielskian of G.The generalized Mycielskians(also known as cones over graphs) μ m(G)(m ≥ 0) are the natural generalization of the Mycielski graphs.In this paper we show that for any connected non-trivial graph G
κ(μ m(G)) = min{δ(G)+1
(m+1)κ(G)+1}
and for m
i ≥ 1
λ(μ m(G)) = λ(G)+i if and only if δ(G) = λ(G)+i 1
where κ(G)
λ(G) and δ(G) are the connectivity
the edge connectivity and the minimum degree of G
respectively.
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