The tree partition number of an r-edge-colored graph G, denoted by t r (G), is the minimum number k such that whenever the edges of G are colored with r colors, the vertices of G can be covered by at most k vertex-disjoint monochromatic trees. We determine t 2 (K (n 1 ; n 2 ; . . . ; n k )) of the c
Partitioning by Monochromatic Trees
β Scribed by P.E. Haxell; Y. Kohayakawa
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 192 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0095-8956
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β¦ Synopsis
Any r-edge-coloured n-vertex complete graph K n contains at most r monochromatic trees, all of different colours, whose vertex sets partition the vertex set of K n , provided n 3r 4 r! (1&1Γr) 3(1&r) log r. This comes close to proving, for large n, a conjecture of Erdo s, Gya rfa s, and Pyber, which states that r&1 trees suffice for all n.
π SIMILAR VOLUMES
It is shown. that for every infinite cardinal \(\kappa\) there exists a graph \(F\) on \(\kappa\) vertices satisfying \(F \rightarrow(T)_{i}^{\text {edgen }}\) for every tree \(T\) on \(\kappa\) vertices and all \(i\) satisfying cf \(\kappa \rightarrow((1))_{j}^{3}\). ' 1993 Acadenic Press, Inc.
In this article we study the monochromatic cycle partition problem for non-complete graphs. We consider graphs with a given independence number (G) = . Generalizing a classical conjecture of Erd" os, GyΓ‘rfΓ‘s and Pyber, we conjecture that if we r-color the edges of a graph G with (G) = , then the ver