On the connectivity of random graphs from addable classes
On the connectivity of random graphs from addable classes
复制标题
关于可添加类的随机图的连通性
DOI:
10.1016/j.jctb.2012.12.001
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
K. Panagiotou
中科院分区:
文献类型:
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作者:
M. Kang;K. Panagiotou
A class A of graphs is called weakly addable (or bridge-addable) if for any G∈A and any two distinct components C1and C2in G, any graph that can be obtained by adding an edge between C1and C2is also in A. McDiarmid, Steger and Welsh (2006) conjectured in [6] that a graph chosen uniformly at random among all graphs with n vertices in a weakly addable A is connected with probability at least e−1/2+o(1), as n→∞. In this paper we show that the conjecture is true under a stronger assumption. A class G of graphs is called bridge-alterable, if for any G∈G and any bridge e in G, G∈G if and only if G−e∈G. We prove that a graph chosen uniformly at random among all graphs with n vertices in a bridge-alterable G is connected with probability at least e−1/2+o(1), as n→∞. The main tool in our analysis is a tight enumeration result that addresses the number of ways in which a given forest can be complemented to a forest with fewer components.
DOI:
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发表时间:
2007
期刊:
影响因子:
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作者:
L. Addario;C. McDiarmid;B. Reed
通讯作者:
B. Reed
DOI:
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发表时间:
2008
期刊:
J. Comb. Theory B
影响因子:
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作者:
P. Balister;B. Bollobás;S. Gerke
通讯作者:
S. Gerke
DOI:
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发表时间:
2006
期刊:
影响因子:
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作者:
C. McDiarmid;A. Steger;D. Welsh
通讯作者:
D. Welsh