Limit cycles and Lie symmetries

Armengol Gasull, Emilio Freire, Antoni Guillamon

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

Given a planar vector field U which generates the Lie symmetry of some other vector field X, we prove a new criterion to control the stability of the periodic orbits of U. The problem is linked to a classical problem proposed by A.T. Winfree in the seventies about the existence of isochrons of limit cycles (the question suggested by the study of biological clocks), already answered by Guckenheimer using a different terminology. We apply our criterion to give upper bounds of the number of limit cycles for some families of vector fields as well as to provide a class of vector fields with a prescribed number of hyperbolic limit cycles. Finally we show how this procedure solves the problem of the hyperbolicity of periodic orbits in problems where other criteria, like the classical one of the divergence, fail. © 2006 Elsevier Masson SAS. All rights reserved.
Original languageEnglish
Pages (from-to)501-517
JournalBulletin des Sciences Mathematiques
Volume131
DOIs
Publication statusPublished - 1 Sep 2007

Keywords

  • Hyperbolicity
  • Isochrons
  • Lie symmetries
  • Limit cycles

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