ON A BOTTLENECK BIPARTITION CONJECTURE OF ERDOS

被引:23
|
作者
PORTER, TD [1 ]
机构
[1] SO ILLINOIS UNIV,DEPT MATH,CARBONDALE,IL 62901
关键词
AMS Subject Classification code (1991): 05C35;
D O I
10.1007/BF01285820
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
For a graph G, let gamma(U,V) = max{e(U),e(V)} for a bipartition (U,V) of V(G) with U or V = V(G), U and V = 0. Define gamma(G) = min(U,V){gamma(U,V)}. Paul Erdos conjectures gamma(G)/e(G) less-than-or-equal-to 1/4+ O(1/square-root e(G)). This paper verifies the conjecture and shows gamma(G)/e(G) less-than-or-equal-to 1/4(1 + square-root 2/e(G)).
引用
收藏
页码:317 / 321
页数:5
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