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Un théorème de dualité entre espaces de fonctions holomorphes à croissance exponentielle

✍ Scribed by R. Gannoun; R. Hachaichi; H. Ouerdiane; A. Rezgui


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
170 KB
Volume
171
Category
Article
ISSN
0022-1236

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✦ Synopsis


Soit N$ l'espace dual d'un Fre chet nucle aire N et % une fonction de Young sur [0, + [. On de finit l'espace F % (N$) des fonctions holomorphes sur N$ et qui ve rifient: pour tout p # N et m>0 il existe K 0 telle que:

Soit %* la fonction conjugue e de % et G %* (N ) l'espace des fonctions holomorphes sur N et qui ve rifient: il existe p # N, m>0 et M 0 telle que:

On de montre que la transforme e de Laplace re alise un isomorphisme topologique entre le dual fort de F % (N$) et G %* (N ). On donne ensuite des applications de ce re sultat aÁ l'analyse du bruit blanc.

2000 Academic Press

Let N$ be the dual of a nuclear Fre chet space N and % a Young function on [0, + [. We define the space F % (N$) of holomorphic functions on N$ which satisfy: for all m>0 and p # N there exists K 0 such that

Let %* be the conjugate function of % and G %* (N ) the space of holomorphic functions on N which satisfy: there exists p # N, m>0 and M 0 such that | g(u)| Me %*(m |u| p ) .

We prove that the Laplace transform realizes a topological isomorphism of the strong dual of F % (N$) on G %* (N ). An application of this result to white noise analysis is given.


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For any irrational x # [0, 1] we denote by p n (x)Âq n (x), n=1, 2, ... the sequence of its continued fraction convergents and define % n (x) :=q n |q n x&p n |. Also let T: [0, 1] Ä [0, 1] be defined by T(0)=0 and T(x)=1Âx&[1Âx] if x{0. For some random variables X 1 , X 2 , ..., which are connected