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New Characterizations and Properties of Matrix $A_\infty$ Weights

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arxiv 2311.05974 v1 pith:HTB52KMT submitted 2023-11-10 math.FA

classification math.FA
keywords weightsmatrixinftycharacterizationsintroducedresultsworkanalogy
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abstract

We provide several new characterizations of $A_{p,\infty}$-matrix weights, originally introduced by A. Volberg as matrix-valued substitutes of the classical $A_\infty$ weights. In analogy with the notion of $A_p$-dimension of matrix weights introduced in our previous work, we introduce the concepts of the lower and the upper dimensions of $A_{p,\infty}$-matrix weights, which enable us to obtain sharp estimates related to their reducing operators. In a follow-up work, these results will play a key role in the study of function spaces with $A_{p,\infty}$-matrix weights, which extends earlier results in the more restricted class of $A_p$-matrix weights.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Maximal Function and Atomic Characterizations of Matrix-Weighted Hardy Spaces with Their Applications to Boundedness of Calder\'on--Zygmund Operators

    math.FA 2025-01 conditional novelty 9.0 of 10

    For p≤1 and A_p matrix weights, matrix-weighted Hardy spaces admit maximal-function, atomic, finite-atomic, and Calderón–Zygmund operator characterizations.

  2. Matrix-Weighted Besov-Triebel-Lizorkin Spaces of Optimal Scale: Real-Variable Characterizations, Invariance on Integrable Index, and Sobolev-Type Embedding

    math.FA 2025-05 accept novelty 8.0 of 10

    Generalized matrix-weighted Besov-Triebel-Lizorkin spaces with growth functions are fully characterized (phi-transform, maximal functions, molecules, wavelets), and p-invariance holds iff the matrix weight is eigenval...

  3. Besov--Triebel--Lizorkin-Type Spaces with Matrix $A_\infty$ Weights

    math.FA 2025-01 conditional novelty 7.0 of 10

    Matrix A-infinity weighted Besov and Triebel-Lizorkin type spaces are characterized via phi-transforms, molecules, wavelets, and atoms, with sharp boundedness conditions for almost diagonal and classical operators.

  4. Matrix-Weighted Besov--Triebel--Lizorkin Spaces of Optimal Scale: Boundedness of Pseudo-Differential, Trace, and Calder\'{o}n--Zygmund Operators

    math.FA 2025-04 conditional novelty 6.0 of 10

    Pseudo-differential, trace, extension, and Calderon-Zygmund operators are shown to be bounded on generalized matrix-weighted Besov-Triebel-Lizorkin-type spaces with matrix A-infinity weights.

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