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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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The inverse integrating factor and the Poincaré map
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by Isaac A. García, Héctor Giacomini and Maite Grau PDF
Trans. Amer. Math. Soc. 362 (2010), 3591-3612 Request permission

Abstract:

This work is concerned with planar real analytic differential systems with an analytic inverse integrating factor defined in a neighborhood of a regular orbit. We show that the inverse integrating factor defines an ordinary differential equation for the transition map along the orbit. When the regular orbit is a limit cycle, we can determine its associated Poincaré return map in terms of the inverse integrating factor. In particular, we show that the multiplicity of a limit cycle coincides with the vanishing multiplicity of an inverse integrating factor over it. We also apply this result to study the homoclinic loop bifurcation. We only consider homoclinic loops whose critical point is a hyperbolic saddle and whose Poincaré return map is not the identity. A local analysis of the inverse integrating factor in a neighborhood of the saddle allows us to determine the cyclicity of this polycycle in terms of the vanishing multiplicity of an inverse integrating factor over it. Our result also applies in the particular case in which the saddle of the homoclinic loop is linearizable, that is, the case in which a bound for the cyclicity of this graphic cannot be determined through an algebraic method.
References
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Additional Information
  • Isaac A. García
  • Affiliation: Departament de Matemàtica, Universitat de Lleida, Avda. Jaume II, 69. 25001 Lleida, Spain
  • Email: garcia@matematica.udl.cat
  • Héctor Giacomini
  • Affiliation: Laboratoire de Mathématiques et Physique Théorique, C.N.R.S. UMR 6083, Faculté des Sciences et Techniques, Université de Tours, Parc de Grandmont 37200 Tours, France
  • Email: Hector.Giacomini@lmpt.univ-tours.fr
  • Maite Grau
  • Affiliation: Departament de Matemàtica, Universitat de Lleida, Avda. Jaume II, 69. 25001 Lleida, Spain
  • Email: mtgrau@matematica.udl.cat
  • Received by editor(s): October 17, 2007
  • Received by editor(s) in revised form: May 8, 2008
  • Published electronically: February 17, 2010
  • Additional Notes: The authors were partially supported by a DGICYT grant number MTM2005-06098-C02-02.

  • Dedicated: Dedicated to Professor Javier Chavarriga
  • © Copyright 2010 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Trans. Amer. Math. Soc. 362 (2010), 3591-3612
  • MSC (2010): Primary 37G15, 37G20, 34C05
  • DOI: https://doi.org/10.1090/S0002-9947-10-05014-2
  • MathSciNet review: 2601601