The bisection width of cubic graphs

For a graph G, define the bisection width bw(G) of G as min { eG(A,B): {A,B} partitions V(G) with ‖A| − |B‖ ≤ 1 } where eG(A, B) denotes the number of edges in G with one end in A and one end in B. We show almost every cubic graph G of order n has bw(G) ≥ n/11 while every such graph has bw(G) ≤ (n +...

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Veröffentlicht in:Bulletin of the Australian Mathematical Society 1989-06, Vol.39 (3), p.389-396
Hauptverfasser: Clark, L.H., Entringer, R.C.
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container_title Bulletin of the Australian Mathematical Society
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creator Clark, L.H.
Entringer, R.C.
description For a graph G, define the bisection width bw(G) of G as min { eG(A,B): {A,B} partitions V(G) with ‖A| − |B‖ ≤ 1 } where eG(A, B) denotes the number of edges in G with one end in A and one end in B. We show almost every cubic graph G of order n has bw(G) ≥ n/11 while every such graph has bw(G) ≤ (n + 138)/3. We also show that almost every r-regular graph G of order n has bw(G) ≥ crn where cr → r/4 as r → ∞. Our last result is asymtotically correct.
doi_str_mv 10.1017/S0004972700003300
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source CUP_剑桥大学出版社现刊; Free E-Journal (出版社公開部分のみ)
subjects Combinatorics
Combinatorics. Ordered structures
Exact sciences and technology
Graph theory
Mathematics
Sciences and techniques of general use
title The bisection width of cubic graphs
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