Bulletin of the London Mathematical Society Advance Access originally published online on September 23, 2009
Bulletin of the London Mathematical Society 2009 41(5):927-934; doi:10.1112/blms/bdp069
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© 2009 London Mathematical Society
Decompositions of complete graphs into long cycles
Department of Mathematics
The University of Queensland
Qld 4072
Australia
Department of Mathematics
The University of Queensland
Qld 4072
Australia
danhorsley@gmail.com
Received 8 April 2008. Revision received 3 March 2009.
The problem of decomposing complete graphs into cycles of arbitrary specified lengths has attracted much attention, but remains largely unsolved. In this paper, the problem is settled in the case where the specified cycle lengths are each more than about half the order of the complete graph. The proof is based on a result that modifies certain existing cycle decompositions to produce new ones in which the lengths of two of the cycles are altered.
2000 Mathematics Subject Classification 05B30, 05C70.
This research was supported by the Australian Research Council.