Results 181 to 190 of about 11,706 (202)

Pointwise multipliers on Orlicz-Campanato spaces

Journal of Functional Analysis, 2023
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Fang, Chenglong, Liu, Liguang
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Pointwise multipliers for Sobolev and Besov spaces of dominating mixed smoothness

Journal of Mathematical Analysis and Applications, 2017
Under certain restrictions we describe the set of all pointwise multipliers in case of Sobolev and Besov spaces of dominating mixed smoothness. In addition we shall give necessary and sufficient conditions for the case that these spaces form algebras with respect to pointwise multiplication.
Van Kien Nguyen
exaly   +3 more sources

Pointwise Estimates of Multipliers

1997
Let T be a linear operator acting in a pair of r.i. spaces. An operator T 1 is said to be a transposed one with respect to T if for every measurable subsets e, f ⊂ [0,1]. A.P. Calderon proved the following theorem [52]. If T and its transposed operator T 1 have the weak types (1,1) and (2,2) with norms ≤ 1, then, for every t ∈ (0,1 ...
Igor Novikov, Evgenij Semenov
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Non-smooth atoms and pointwise multipliers in function spaces

Annali Di Matematica Pura Ed Applicata, 2003
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exaly   +3 more sources

Pointwise multipliers and decomposition theorems in analytic Besov spaces

Mathematische Zeitschrift, 2000
The authors proved the corona problem for holomorphic Besov space \(\mathcal{B}_s^p\) in the unit ball \({B}\) of \(\mathbb{C}^n\). For \(g_1, \cdots, g_m \in {H} = {H(B)},\) the space of holomorphic functions, it is well-known that the operator \[ \begin{aligned} {M}_g : {H}^m & = {H} \times \cdots \times {H} \rightarrow {H} \\ & f = (f_1, \cdots, f_m)
Ortega, Joaquín M., Fàbrega, Joan
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Pointwise multipliers of Lizorkin-Triebel spaces

1999
This paper contains two parts. In the first one we give a survey on sufficient and necessary conditions on a function f to belong to the set of all pointwise multipliers of certain Lizorkin-Triebel spaces. In part two we use these results to investigate under which geometrical conditions on the boundary the characteristic function XE of an open set E ...
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Pointwise Multipliers on Musielak-Orlicz-Morrey Spaces

2017
In this paper we characterize pointwise multipliers from a Musielak-Orlicz-Morrey space to another Musielak-Orlicz-Morrey space. The set of all pointwise multipliers is also a Musielak-Orlicz-Morrey space.
openaire   +1 more source

Pointwise Multipliers of Zygmund Classes on"Equation missing"

The Journal of Geometric Analysis, 2020
Aline Bonami, Liguang Liu, Dachun Yang, Wen Yuan   +3 more
openaire   +1 more source

Atoms and Pointwise Multipliers

2006
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Pointwise multipliers of Calderón‐Lozanovskiǐ spaces

Mathematische Nachrichten, 2013
Paweł Kolwicz, Karol Lesnik, Lech Maligranda   +2 more
exaly