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Ore's theorem is a result in graph theory proved in 1960 by Norwegian mathematician Øystein Ore. It gives a sufficient condition for a graph to be Hamiltonian, essentially stating that a graph with sufficiently many edges must contain a Hamilton cycle. Specifically, the theorem considers the sum of the degrees of … See more
It is equivalent to show that every non-Hamiltonian graph G does not obey condition (∗). Accordingly, let G be a graph on n ≥ 3 vertices … See more
Ore's theorem is a generalization of Dirac's theorem that, when each vertex has degree at least n/2, the graph is Hamiltonian. For, if … See more
Wikipedia text under CC-BY-SA license Ore's Theorem - ProofWiki
Ore's Theorem -- from Wolfram MathWorld
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