Independent Dominating Sets and a Second
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Carsten Thomassen
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Article
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1998
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Elsevier Science
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English
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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.