Cordial deficiency.
Riskin, Adrian (2007)
Bulletin of the Malaysian Mathematical Sciences Society. Second Series
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Riskin, Adrian (2007)
Bulletin of the Malaysian Mathematical Sciences Society. Second Series
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Discussiones Mathematicae Graph Theory
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Let G be a graph on n vertices. A vertex of G with degree at least n/2 is called a heavy vertex, and a cycle of G which contains all the heavy vertices of G is called a heavy cycle. In this note, we characterize graphs which contain no heavy cycles. For a given graph H, we say that G is H-heavy if every induced subgraph of G isomorphic to H contains two nonadjacent vertices with degree sum at least n. We find all the connected graphs S such that a 2-connected graph G being S-heavy implies...