Continuation Theorems for Periodic Perturbations of Autonomous Systems

Authors:
  • ACAnna Capietto
    Anna Capietto
  • JMJean Mawhin
    Jean Mawhin
  • FZFabio Zanolin
    Fabio Zanolin

Abstract
It is first shown in this paper that, whenever it exists, the coincidence degree of the left-hand member of an autonomous differential equation <!-- MATH \begin{displaymath} x' - {\text{g}}(x) = 0 \end{displaymath} -->

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