Fonctionnelles multiplicatives opératrices
Fonctions cosinus hilbertiennes bornées dans les groupes commutatifs localement compacts
Fonctions de mailles et théorie elliptique des opérateurs aux différences finies (suite)
Fonctions de mailles et théorie elliptique des opérateurs aux différences finies
Fonctions entières et théorèmes de Banach-Steinhaus dans certaines algèbres complètes
Fonctions qui opèrent sur les espaces de Besov.
Foreword
Form perturbations of the second quantized Dirac field.
Formeln für Pole der Resolvente und den Radius eines wesentlichen Spektrums.
Formes bilinéaires compatibles avec un système hyperbolique et problème de Cauchy
Formes bilinéaires hankéliennes compactes sur H2 (X) X H2 (Y).
Forms, functional calculus, cosine functions and perturbation
In this article we describe properties of unbounded operators related to evolutionary problems. It is a survey article which also contains several new results. For instance we give a characterization of cosine functions in terms of mild well-posedness of the Cauchy problem of order 2, and we show that the property of having a bounded -calculus is stable under rank-1 perturbations whereas the property of being associated with a closed form and the property of generating a cosine function are not....
Formulae for joint spectral radii of sets of operators
The formula is proved for precompact sets M of weakly compact operators on a Banach space. Here ϱ(M) is the joint spectral radius (the Rota-Strang radius), is the Hausdorff spectral radius (connected with the Hausdorff measure of noncompactness) and r(M) is the Berger-Wang radius.
Formule de Weyl pour les groupes de Lie nilpotents.
Forward-backward parabolic equations and hysteresis
Four characterizations of scalar-type operators with spectrum in a half-line
-scalar-type spectrality criterions for operators A whose resolvent set contains the negative reals are provided. The criterions are given in terms of growth conditions on the resolvent of A and the semigroup generated by A. These criterions characterize scalar-type operators on the Banach space X if and only if X has no subspace isomorphic to the space of complex null-sequences.
Fourier analysis of a space of Hilbert-Shmidt operators. New Ha-plitz type operators.
If a group acts via unitary operators on a Hilbert space of functions then this group action extends in an obvious way to the space of Hilbert-Schmidt operators over the given Hilbert space. Even if the action on functions is irreducible, the action on H.-S. operators need not be irreducible. It is often of considerable interest to find out what the irreducible constituents are. Such an attitude has recently been advocated in the theory of "Ha-pliz" (Hankel + Toeplitz) operators. In this paper we...
Fourier analysis, Schur multipliers on and non-commutative Λ(p)-sets
This work deals with various questions concerning Fourier multipliers on , Schur multipliers on the Schatten class as well as their completely bounded versions when and are viewed as operator spaces. For this purpose we use subsets of ℤ enjoying the non-commutative Λ(p)-property which is a new analytic property much stronger than the classical Λ(p)-property. We start by studying the notion of non-commutative Λ(p)-sets in the general case of an arbitrary discrete group before turning to the...
Fourier coefficients of continuous linear mappings on homogeneous Banach spaces
Fourier Inequalities and Moment Subspaces in Weightes Lebesgue Spaces.