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Displaying 41 – 60 of 178

Ensembles de Sidon topologiques

Myriam Dechamps-Gondim (1972)

Annales de l'institut Fourier

On étudie les ensembles de Sidon d’un groupe abélien localement compact et métrisable $Γ$ . Après avoir démontré des résultats sur la réunion, l’élargissement et la stabilité de ces ensembles lacunaires, on détaille le résultat fondamental de ce travail : lorsque le dual $G$ de $Γ$ est connexe, toute partie compacte d’intérieur non vide de $G$ est associée à tout ensemble de Sidon de $Λ$ . Autrement dit, étant donné un compact $K$ d’intérieur non vide de $G$ , toute fonction bornée à valeurs complexes définie sur...

Erratum to "On convolution operators with small support which are far from being convolution by a bounded measure" (Colloq. Math. 67 (1994), 33-60)

Edmond Granirer (1996)

Colloquium Mathematicae

Estimates for translation-invariant operators on spaces with mixed norms

Carl Herz, Nestor Rivière (1972)

Studia Mathematica

Extensions and triviality of multipliers on sub-semigroups of the reals.

P.R. Chernoff (1990)

Semigroup forum

Extreme non-Arens regularity of quotients of the Fourier algebra A(G)

Zhiguo Hu (1997)

Colloquium Mathematicae

Faltungsoperatoren auf gewissen diskreten Gruppen

Michael Leinert (1974)

Studia Mathematica

Filtre moyennant et valeurs moyennes des capacités invariantes

Jean Moulin Ollagnier, Didier Pinchon (1982)

Bulletin de la Société Mathématique de France

Fonctions arithmétiques multiplicatives et multiplicateurs de Fourier. II

H. Daboussi, J. Peyrière (1987)

Colloquium Mathematicae

Fonctions arithmétiques multiplicatives et multiplicateurs des coefficients de Fourier des fonctions de puissance p-ième sommable

Hedi Daboussi, Jacques Peyrière (1973)

Colloquium Mathematicae

Formes linéaires invariantes par translation et approximation rationnelle

François Gramain (1974/1975)

Séminaire Delange-Pisot-Poitou. Théorie des nombres

Fourier analysis, Schur multipliers on $S^{p}$ and non-commutative Λ(p)-sets

Asma Harcharras (1999)

Studia Mathematica

This work deals with various questions concerning Fourier multipliers on $L^{p}$ , Schur multipliers on the Schatten class $S^{p}$ as well as their completely bounded versions when $L^{p}$ and $S^{p}$ 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 Multipliers for Certain Spaces of Functions.

G. Ritter, R.E. Edwards, E. Hewitt (1977)

Inventiones mathematicae

Fourier Multipliers on Compact Groups.

T.S. Quek, Y.H. Yap (1982)

Monatshefte für Mathematik

Fourier Transforms of Lipschitz Functions and Fourier Multipliers on Compact Groups.

Tong-Seng Quek, Leonard Y.H. Yap (1983)

Mathematische Zeitschrift

Fredholm multipliers of semisimple commutative Banach algebras.

Pietro Aiena (1991)

Extracta Mathematicae

In some recent papers ([1],[2],[3],[4]) we have investigated some general spectral properties of a multiplier defined on a commutative semi-simple Banach algebra. In this paper we expose some aspects concerning the Fredholm theory of multipliers.

Fredholm, Riesz and local spectral theory of multipliers.

Pietro Aiena (1994)

Extracta Mathematicae

Functional calculus of Lie groups and wave propagation.

Müller, Detlef (1998)

Documenta Mathematica

Functions in $L^{\infty} (G)$ and associated convolution operators

Françoise Lust-Piquard, Walter Schachermayer (1989)

Studia Mathematica

Hardy spaces on SU(2)

Jarosław Krawczyk (1988)

Colloquium Mathematicae

Homogeneous algebras on the circle. II. Multipliers, Ditkin conditions

Colin Bennett, John E. Gilbert (1972)

Annales de l'institut Fourier

This paper considers the Lipschitz subalgebras $Λ (α, p, 𝒜)$ of a homogeneous algebra on the circle. Interpolation space theory is used to derive estimates for the multiplier norm on closed primary ideals in $Λ (α, p; 𝒜)$ , $α \neq [α]$ . From these estimates the Ditkin and Analytic Ditkin conditions for $Λ (α, p; 𝒜)$ follow easily. Thus the well-known theory of (regular) Banach algebras satisfying the Ditkin condition applies to $Λ (α;, p; 𝒜)$ as does the theory developed in part I of this series which requires the Analytic Ditkin condition.Examples are discussed...

Currently displaying 41 – 60 of 178

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