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A Tighter Erdős‐Pósa Function for Long Cycles
Authors:Samuel Fiorini  Audrey Herinckx
Affiliation:DEPARTMENT OF MATHEMATICS, UNIVERSITé LIBRE DE BRUXELLES, BOULEVARD DU TRIOMPHE, B‐1050 BRUSSELS, BELGIUM
Abstract:We prove that there exists a bivariate function f with urn:x-wiley:03649024:media:jgt21776:jgt21776-math-0001 such that for every natural k and ?, every graph G has at least k vertex‐disjoint cycles of length at least ? or a set of at most urn:x-wiley:03649024:media:jgt21776:jgt21776-math-0002 vertices that meets all cycles of length at least ?. This improves a result by Birmelé et al. (Combinatorica, 27 (2007), 135–145), who proved the same result with urn:x-wiley:03649024:media:jgt21776:jgt21776-math-0003.
Keywords:Erdő  s‐Pó  sa property  cycles
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