Browsing by Author "Nadine ,BENYOUCEF"

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    Positive Periodic Solutions for an Iterative Model of Erythropoiesis in Animals
    (Faculty of Sciences, 2025) Nadine ,BENYOUCEF; Ahlème. ,BOUAKKAZ
    The primary aim of this work is to study the existence, uniqueness, and continuous dependence on parameters of positive periodic solutions for a rst-order delay di¤erential equation with an iterative term, describing the dynamics of red blood cell populations in animals. Using the Krasnoselskii xed point theorem combined with the Green s functions method, we prove the existence of at least one positive periodic solution for the given equation. Furthermore, by virtue of the Banach xed point theorem, we also investigate the existence and the continuous dependence on parameters of the unique positive periodic solution.