Stability, boundedness and existence of unique periodic solutions to a class of functional differential equations

• Ademola, Adeleke Timothy ^[1]
  1. [1] Obafemi Awolowo University

     Obafemi Awolowo University

     Nigeria

     
• Localización: Proyecciones: Journal of Mathematics, ISSN 0716-0917, ISSN-e 0717-6279, Vol. 40, Nº. 2, 2021, págs. 271-303
• Idioma: inglés
• DOI: 10.22199/issn.0717-6279-2021-02-0017
• Enlaces
  • Texto completo
• Resumen

  • In this paper a novel class of fourth order functional differential equations is discussed. By reducing the fourth order functional differential equation to system of first order, a suitable complete Lyapunov functional is constructed and employed to obtain sufficient conditions that guarantee existence of a unique periodic solution, asymptotic and uniform asymptotic stability of the zero solutions, uniform boundedness and uniform ultimate boundedness of solutions. The obtained results are new and include many prominent results in literature. Finally, two examples are given to show the feasibility and reliability of the theoretical results.

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