Department of mathematics_BThesis

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Browsing Department of mathematics_BThesis by Author "ATTOUSI, Raihana"

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    Les fonctions presque-périodiques
    (university of eloued جامعة الوادي, 2014) ATTOUSI, Raihana; GHARIB, Sana; GHENADRA, Aouatef; TAMMA, Khouloud
    في هرا انعمم قمىا بإعطاء فكسة بسيطت حىل مفهىو اندوال شبه اندوزيت وذنك بمقازوتها باندوال اندوزيت, عدة خصائص عممج ومه أهمها وشس فىزيه. نهرا انىىع مه اندوال أهميت كبيسة في دزاست انمعادلاث انتفاضهيت, وظسياث بىخىاز أستعمهج هىا في بسهان وظسيت وجىد ووحداويت انحم اندوزي نمسأنت ديمىدوفيتش.In this work, we interested in giving a simple idea on the concept of quasi-periodic functions using a comparison between such functions and periodic functions, some properties are generalized as the Fourier expansion. This type of functions is of great importance in the study of differential equations. Bochner theorems are used to demonstrate the theorem of existence and uniqueness of an quasi-periodic solution for the problem of Démidovitch.