On the time function of the Dulac map for families of meromorphic vector fields

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Published 7 March 2003 Published under licence by IOP Publishing Ltd
, , Citation P Mardesić et al 2003 Nonlinearity 16 855 DOI 10.1088/0951-7715/16/3/305

0951-7715/16/3/855

Abstract

Given an analytic family of vector fields in Bbb R2 having a saddle point, we study the asymptotic development of the time function along the union of the two separatrices. We obtain a result (depending uniformly on the parameters) which we apply to investigate the bifurcation of critical periods of quadratic centres.

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10.1088/0951-7715/16/3/305