Interpolating between bounds on the independence number

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Interpolating between bounds on the independence number

For a non-negative integer T , we prove that the independence number of a graph G = (V,E) in which every vertex belongs to at most T triangles is at least ∑ u∈V f(d(u), T ) where d(u) denotes the degree of a vertex u ∈ V , f(d, T ) = 1 d+1 for T ≥ ( d 2 ) and f(d, T ) = (1 + (d2− d− 2T )f(d− 1, T ))/(d2 + 1− 2T ) for T < ( d 2 ) . This is a common generalization of the lower bounds for the inde...

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ژورنال

عنوان ژورنال: Discrete Mathematics

سال: 2010

ISSN: 0012-365X

DOI: 10.1016/j.disc.2010.05.026