A 1-factor of a graph G = (V, E) is a collection of disjoint edges which contain all the vertices of V . Given a 2n -1 edge coloring of K2n, n ≥ 3, we prove there exists a 1-factor of K2n whose edges have distinct colors. Such a 1-factor is called a ''Rainbow.''
On the existence of a rainbow 1-factor in 1-factorizations of K
✍ Scribed by S.I. El-Zanati; M.J. Plantholt; P.A. Sissokho; L.E. Spence
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 85 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1063-8539
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Let ${\cal F}$ be a 1‐factorization of the complete uniform hypergraph ${\cal G}={K_{rn}^{(r)}}$ with $r \geq 2$ and $n\geq 3$. We show that there exists a 1‐factor of ${\cal G}$ whose edges belong to n different 1‐factors in ${\cal F}$. Such a 1‐factor is called a “rainbow” 1‐factor or an “orthogonal” 1‐factor. © 2007 Wiley Periodicals, Inc. J Combin Designs 15: 487–490, 2007
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