The space of multipliers and convolutors of Orlicz spaces on a locally compact group

Hasan P. Aghababa ; Ibrahim Akbarbaglu ; Saeid Maghsoudi

Studia Mathematica, Tome 215 (2013), p. 19-34 / Harvested from The Polish Digital Mathematics Library

Résumé

Let G be a locally compact group, let (φ,ψ) be a complementary pair of Young functions, and let $L^{φ}(G)$ and $L^{ψ}(G)$ be the corresponding Orlicz spaces. Under some conditions on φ, we will show that for a Banach $L^{φ}(G)$-submodule X of $L^{ψ}(G)$, the multiplier space $Hom_{L^{φ}(G)}(L^{φ}(G),X*)$ is a dual Banach space with predual $L^{φ}(G)∙X := \overline{span} {ux: u ∈ L^{φ}(G), x ∈ X}$, where the closure is taken in the dual space of $Hom_{L^{φ}(G)}(L^{φ}(G),X*)$. We also prove that if $φ $ is a Δ₂-regular N-function, then $Cv_{φ}(G)$, the space of convolutors of $M^{φ}(G)$, is identified with the dual of a Banach algebra of functions on G under pointwise multiplication.

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Publié le : 2013-01-01

Zbl 1290.43007

EUDML-ID : urn:eudml:doc:286224