Partition numbers, connectivity and Hamiltonicity
Mieczysław Borowiecki (1987)
Časopis pro pěstování matematiky
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Mieczysław Borowiecki (1987)
Časopis pro pěstování matematiky
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Teresa Haynes, Michael Henning (2012)
Open Mathematics
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A graph G is diameter-2-critical if its diameter is two and the deletion of any edge increases the diameter. In this paper we characterize the diameter-2-critical graphs with no antihole of length four, that is, the diameter-2-critical graphs whose complements have no induced 4-cycle. Murty and Simon conjectured that the number of edges in a diameter-2-critical graph of order n is at most n 2/4 and that the extremal graphs are complete bipartite graphs with equal size partite sets. As...
Bohdan Zelinka (1984)
Mathematica Slovaca
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Josef Voldřich (1978)
Časopis pro pěstování matematiky
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