## Abstract A lower bound is established on the number of edges in a maximum __k__‐colorable subgraph of a loopless graph __G__. For the special case of 3‐regular graphs, lower bounds are also determined on the maximum number of edges in a bipartite subgraph whose color classes are of equal size.
Coloring with three-colored subgraphs
✍ Scribed by Dhruv Mubayi
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 75 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Let f(n) be the minimum number of colors required to color the edges of K~n,n~ such that every copy of K~3,3~ receives at least three colors on its edges. We prove that
$$(0.62+o(1))\sqrt{n}< , f(n)< , (1+o(1))\sqrt{n}$$,
where the upper bound is obtained by an explicit edge‐coloring. This complements earlier results of Axenovich, Füredi, and Mubayi [1]. © 2003 Wiley Periodicals, Inc. J Graph Theory 42: 193–198, 2003
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