Darboux integrability and algebraic limit cycles for a class of polynomial differential systems

Jin Long Cao, Jaume Llibre, Xiang Zhang

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1 Citation (Scopus)

Abstract

This paper deals with the existence of Darboux first integrals for the planar polynomial differential systems ẋ = λ x-y+P n+1(x, y)+xF 2n(x, y), ẏ = x+λy+Q n+1(x, y)+yF 2n(x, y), where P i(x, y), Q i(x, y) and F i(x, y) are homogeneous polynomials of degree i. Within this class, we identify some new Darboux integrable systems having either a focus or a center at the origin. For such Darboux integrable systems having degrees 5 and 9 we give the explicit expressions of their algebraic limit cycles. For the systems having degrees 3, 5, 7 and 9 and restricted to a certain subclass we present necessary and sufficient conditions for being Darboux integrable. © 2014 Science China Press and Springer-Verlag Berlin Heidelberg.
Original languageEnglish
Pages (from-to)775-794
JournalScience China Mathematics
Volume57
Issue number4
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Abel differential equation
  • Darboux first integral
  • algebraic limit cycles

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