Let n ≥ 3 and ⋋ ≥ 1 be integers. Let ⋋Kn denote the complete multigraph with edge-multiplicity ⋋. In this paper, we show that there exists a symmetric Hamilton cycle decomposition of ⋋K2m for all even ⋋ ≥ 2 and m ≥ 2. Also we show that there exists a symmetric Hamilton cycle decomposition of ⋋K2m − F for all odd ⋋ ≥ 3 and m ≥ 2. In fact, our results together with the earlier results (by Walecki and Brualdi and Schroeder) completely settle the existence of symmetric Hamilton cycle decomposition of ⋋Kn (respectively, ⋋Kn − F, where F is a 1-factor of ⋋Kn) which exist if and only if ⋋(n − 1) is even (respectively, ⋋(n − 1) is odd), except the non-existence cases n ≡ 0 or 6 (mod 8) when ⋋ = 1
@article{bwmeta1.element.doi-10_7151_dmgt_1687, author = {V. Chitra and A. Muthusamy}, title = {Symmetric Hamilton Cycle Decompositions of Complete Multigraphs}, journal = {Discussiones Mathematicae Graph Theory}, volume = {33}, year = {2013}, pages = {695-707}, zbl = {1297.05138}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_7151_dmgt_1687} }
V. Chitra; A. Muthusamy. Symmetric Hamilton Cycle Decompositions of Complete Multigraphs. Discussiones Mathematicae Graph Theory, Tome 33 (2013) pp. 695-707. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_7151_dmgt_1687/
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