Ideale mit beschränkter approximativer Eins in Gruppenalgebren von Moore-Gruppen.
Ideals in Group Algebras of Finitely Generated FC-Nilpotent Discrete Groups.
Interpolation linéaire et équations fonctionnelles
Intertwining operators over L1 (G) for G ? [PG] ? [SIN].
Introduction to the theory of group representations
Invariant subsets of nonsynthesis Leptin algebras and nonsymmetry
Kazhdan constants and the dual space topology.
L...-harmonic Analysis on Semi-Direct products of Abelian Groups.
Module maps over locally compact quantum groups
We study locally compact quantum groups and their module maps through a general Banach algebra approach. As applications, we obtain various characterizations of compactness and discreteness, which in particular generalize a result by Lau (1978) and recover another one by Runde (2008). Properties of module maps on are used to characterize strong Arens irregularity of L₁() and are linked to commutation relations over with several double commutant theorems established. We prove the quantum group...
Nichtsymmetrische sechsdimensionale Liesche Gruppen.
Nilpotente Liesche Gruppen haben symmetrische Gruppenalgebren.
Nonsymmetric group algebras
On Banach algebras satisfying a spectral maximum principle
On Beurling measure algebras
We show how the measure theory of regular compacted-Borel measures defined on the -ring of compacted-Borel subsets of a weighted locally compact group provides a compatible framework for defining the corresponding Beurling measure algebra , thus filling a gap in the literature.
On Bounded Approximate Units in Ideals of Group Algebras*
On character amenable Banach algebras
We obtain characterizations of left character amenable Banach algebras in terms of the existence of left ϕ-approximate diagonals and left ϕ-virtual diagonals. We introduce the left character amenability constant and find this constant for some Banach algebras. For all locally compact groups G, we show that the Fourier-Stieltjes algebra B(G) is C-character amenable with C < 2 if and only if G is compact. We prove that if A is a character amenable, reflexive, commutative Banach algebra, then A...
On convolution operators with small support which are far from being convolution by a bounded measure
Let be the left convolution operators on with support included in F and denote those which are norm limits of convolution by bounded measures in M(F). Conditions on F are given which insure that , and are as big as they can be, namely have as a quotient, where the ergodic space W contains, and at times is very big relative to . Other subspaces of are considered. These improve results of Cowling and Fournier, Price and Edwards, Lust-Piquard, and others.
On Density Properties of Certain Subgroups with Boundedness Conditions.
On group algebras of nilpotent Lie groups
On Maximal Ideals in Group Algebras of SIN-Groups.