JournalspmVol. 65 / No. 1DOI 10.4171/pm/1796

A generalisation of Cartwright’s Theorem: nonautonomous differential equations case

  • Ahmed Berboucha

    Université A. Mira–Béjaia, Algeria
A generalisation of Cartwright’s Theorem: nonautonomous differential equations case cover

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Abstract

In this article we show that the almost-periodic solutions of a large class of nonautonomous delay differential equations are quasi-periodic. This result is a generalisation of a theorem proved by Cartwright for ordinary differential equations.