On weak orbits of operators

Entropy numbers and spectral radius type formula for composition operators on the polydisk.. Daniel Li, Hervé Queffélec,

Lef`evre, Universit´e d’Artois, Laboratoire de Math´ematiques de Lens EA 2462, F´ed´eration CNRS Nord-Pas-de-Calais FR 2956, Facult´e des Sciences Jean Perrin, Rue Jean Souvraz,

It is a natural non- commutative counterpart to the decomposition used for the classical proof but unfortunately, new kind of terms appear which will necessitate more re-

Section 4 first recalls classical facts about Wiener spaces, then gives a precise definition of the stochastic extensions, recalls the Segal Bargmann transfor- mation, gives

Then in Section 4, we use these local estimates to obtain global continuities for bilinear operators in weighted Lebesgue and Sobolev spaces and in particular we prove Theorem 1.3..

The origin of this paper is the following natural question: Given two Banach spaces B and E, is it possible to describe all the operators from B to E that can be extended to

We will say that S (resp. However, despite the extensive literature related to Toeplitz operators, it seems that it is not known if every Toeplitz operator is induced by a multiplier

We have given in [BGS] a direct proof of the fact that Hankel operators are bounded on H 1 in the unit ball if and only if their symbol is in the space LMOA, without