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Counterexamples to a conjecture of Lemmermeyer

โœ Scribed by Nigel Boston; Charles Leedham-Green


Publisher
Springer
Year
1999
Tongue
English
Weight
51 KB
Volume
72
Category
Article
ISSN
0003-889X

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A counterexample to a conjecture of gran
โœ Mao-cheng Cai ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 74 KB

We give a counterexample to the following conjecture of Douglas D. Grant Cl]: If a positive integer t 3 2 and D is a strict digraph of order 2t such that S+(D) 3 t and S'(D)2 t, then D has an anti-directed hamiltonian cycle. Where S+(D) and 6-(D) denote the minimum indegree and outdegree, respective