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Isomorphic Factorization of Trees of Maximum Degree Three

P. Horak1, X. Zhu2
1Department of Mathematics and Statistics, Simon Fraser University, Canada; and Katedra Matematiky, EF STU, 812 19 Bratislava, Slovakia
2Departement of Mathematics and Statistics, Simon Fraser University, Canada

Abstract

We prove that for any tree T of maximum degree three, there exists a subset S of E(T) with |S|=O(logn) and a two-coloring of the edges of the forest TS such that the two monochromatic forests are isomorphic, where n is the number of vertices of T of degree three.