Abstract
Necessary conditions for a simple connected graph G to admit a decomposition into closed trails of length k ≥ 3 are that G is even and its total number of edges is a multiple of k. In this paper we show that these conditions are sufficient in the case when G is the complete equipartite graph having at least three parts, each of the same size.
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Smith, B.R. Decomposing Complete Equipartite Graphs into Closed Trails of Length k . Graphs and Combinatorics 26, 133–140 (2010). https://doi.org/10.1007/s00373-010-0899-8
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DOI: https://doi.org/10.1007/s00373-010-0899-8