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Decomposition of complete graphs into small graphs
Author(s) -
Dalibor Fronček
Publication year - 2010
Publication title -
opuscula mathematica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.481
H-Index - 16
eISSN - 2300-6919
pISSN - 1232-9274
DOI - 10.7494/opmath.2010.30.3.277
Subject(s) - mathematics , combinatorics , decomposition , indifference graph , chordal graph , modular decomposition , pathwidth , discrete mathematics , graph , line graph , chemistry , organic chemistry
In 1967, A. Rosa proved that if a bipartite graph \(G\) with \(n\) edges has an \(\alpha\)-labeling, then for any positive integer \(p\) the complete graph \(K_{2np+1}\) can be cyclically decomposed into copies of \(G\). This has become a part of graph theory folklore since then. In this note we prove a generalization of this result. We show that every bipartite graph \(H\) which decomposes \(K_k\) and \(K_m\) also decomposes \(K_{km}\)

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