In 1975, John Sheehan conjectured that every Hamiltonian 4-regular graph has a second Hamiltonian cycle. Combined with earlier results this would imply that every Hamiltonian r-regular graph (r 3) has a second Hamiltonian cycle. We shall verify this for r 300.
Independent dominating sets and hamiltonian cycles
β Scribed by Penny Haxell; Ben Seamone; Jacques Verstraete
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 168 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0364-9024
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β¦ Synopsis
Abstract
A graph is uniquely hamiltonian if it contains exactly one hamiltonian cycle. In this note we prove that there are no rβregular uniquely hamiltonian graphs when rβ>β22. This improves upon earlier results of Thomassen. Β© 2006 Wiley Periodicals, Inc. J Graph Theory 54: 233β244, 2007
π SIMILAR VOLUMES
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