An improvement of Bondy's theorem on Hamilton graph condition (Q2767416)

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scientific article; zbMATH DE number 1697426
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An improvement of Bondy's theorem on Hamilton graph condition
scientific article; zbMATH DE number 1697426

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    29 January 2002
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    circumference
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    connectivity
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    tough graph
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    Hamilton cycle
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    An improvement of Bondy's theorem on Hamilton graph condition (English)
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    Let \(G= (V,E)\) be a graph. \(\sigma_k(G)\) is the minimum of the degree sum of every independent set of order \(k\) in \(G\). It is proved in this paper that a \(k\)-connected tough graph of order \(n\) contains a Hamilton circuit if \(\sigma_{k+1}(G)\) is at least \((k+1)(n-3)/2\). This result strengthens an early result of Bondy in 1980.
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