Complex Analysis/Functional Analysis
Expansion in series of exponential polynomials of mean-periodic functions with growth conditions
[Développement en séries de polynômes exponentiels des fonctions moyenne-périodiques à croissance θ-exponentielle]
Comptes Rendus. Mathématique, Tome 346 (2008) no. 9-10, pp. 509-514.

Soit θ une fonction de Young. Considérons l'espace Fθ(C) de toutes les fonctions entières sur C à croissance θ-exponentielle. On s'intéresse dans cette Note aux solutions fFθ(C) de l'équation de convolution Tf=0, appelées fonctions T-moyenne-périodiques, où T est dans le dual topologique de Fθ(C). On montre que toute fonction moyenne-périodique admet un développement en série de polynômes exponentiels. De plus cette série est convergente pour la topologie de l'espace Fθ(C).

Let θ be a Young function. Consider the space Fθ(C) of all entire functions on C with θ-exponential growth. In this Note, we are interested in the solutions fFθ(C) of the convolution equation Tf=0, called T-mean-periodic functions, where T is in the topological dual of Fθ(C). We show that each mean-periodic function admits an expansion as a convergent series of exponential polynomials.

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Accepté le :
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DOI : 10.1016/j.crma.2008.03.027
Ouerdiane, Habib 1 ; Ounaies, Myriam 2

1 Département de mathématique, faculté des sciences de Tunis, Université de Tunis El Manar, campus universitaire, 1060 Tunis, Tunisia
2 Institut de recherche mathématique avancée, Université Louis-Pasteur, 7, rue René-Descartes, 67084 Strasbourg cedex, France
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Ouerdiane, Habib; Ounaies, Myriam. Expansion in series of exponential polynomials of mean-periodic functions with growth conditions. Comptes Rendus. Mathématique, Tome 346 (2008) no. 9-10, pp. 509-514. doi : 10.1016/j.crma.2008.03.027. http://www.numdam.org/articles/10.1016/j.crma.2008.03.027/

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