Multipliers on some Lorentz spaces.
Multipliers on some weighted -spaces.
Multipliers on Spaces of Functions on a Locally Compact Abelian Group with Values in a Hilbert Space
2000 Mathematics Subject Classification: Primary 43A22, 43A25.We prove a representation theorem for bounded operators commuting with translations on L2ω(G,H), where G is a locally compact abelian group, H is a Hilbert space and ω is a weight on G. Moreover, in the particular case when G = R, we characterize completely the spectrum of the shift operator S1,ω on Lω2(R,H).
Multipliers on subsemigroups of locally compact abelian groups.
Multipliers on weighted Hardy spaces over certain totally disconnected groups.
Multipliers on weighted Hardy spaces over locally compact Vilenkin groups, II
Multipliers, self-induced and dual Banach algebras [Book]
Multipliers with closed range on commutative semisimple Banach algebras
Let A be a commutative semisimple Banach algebra, Δ(A) its Gelfand spectrum, T a multiplier on A and T̂ its Gelfand transform. We study the following problems. (a) When is δ(T) = inf{|T̂(f)|: f ∈ Δ(A), T̂(f) ≠ 0} > 0? (b) When is the range T(A) of T closed in A and does it have a bounded approximate identity? (c) How to characterize the idempotent multipliers in terms of subsets of Δ(A)?
Norms of Harmonic Projection Operators on Compact Lie Groups.
On a recurrence formula for elementary spherical functions on symmetric spaces and its applications to multipliers for the spherical Fourier transform.
On commutative approximate identities
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 Exact Toral Endomorphisms.
On L... Fourier multipliers on certain symmetric spaces.
On Lp Spectral Multipliers for a Solvable Lie Group.
On some spaces of linear functionals on the algebras for locally compact groups
On the Banach algebra A (...) for smooth sets ... Rn.
On the characters of exponential solvable Lie groups
On the continuity of convolution semigroups.
On the continuity of quotient multipliers