Isochronous properties in fractal analysis of some planar vector fields

  • Wu H
  • Li W
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We extend the classical Belitskii normal form theorem uniformly for planar nilpotent foci and limit cycles. Then by using fractal analysis, isochronous properties near such invariant sets are well investigated. © 2010 Elsevier Masson SAS.

Author-supplied keywords

  • Fractal analysis
  • Isochronous foci
  • Normal form

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  • Hao Wu

  • Weigu Li

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