“School of Mathematics”
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| Paper IPM / M / 8280 |
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| Abstract: | |
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We say that two graph G and H with the same vertex set commute if their adjacency matrices commute. In this article, we show that for any natural number r, the complete multigraph Krn is decomposable into commuting perfect matchings if and only if n is a 2-power. Also, it is shown that the complete graph Kn is decomposable into commuting Hamilton cycles if and only if n is a prime number.
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