Decomposing highly edge-connected graphs into paths of any given length

preprint2015arXivOpen access

Abstract

In 2006, Barát and Thomassen posed the following conjecture: for each tree TT, there exists a natural number kTk_T such that, if GG is a kTk_T-edge-connected graph and ∣E(G)∣|E(G)| is divisible by ∣E(T)∣|E(T)|, then GG admits a decomposition into copies of TT. This conjecture was verified for stars, some bistars, paths of length 33, 55, and 2r2^r for every positive integer rr. We prove that this conjecture holds for paths of any fixed length.

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