Banach space valued $H^p$ spaces with $A_p$ weight
Functional Analysis
2023-01-06 v3 Classical Analysis and ODEs
Abstract
In this research we introduce the Banach space valued Hp spaces with Ap weight, and prove the following results: Let A and B Banach spaces, and T be a convolution operator mapping A-valued functions into B-valued functions, i.e., Tf(x)=∫RnK(x−y)⋅f(y)dy, where K is a strongly measurable function defined on Rn such that ∥K(x)∥B is locally integrable away from the origin. Suppose that w is a positive weight function defined on Rn, and that i) For some q∈[1,∞], there exists a positive constant C1 such that ∫Rn∥Tf(x)∥Bqw(x)dx≤C1∫Rn∥f(x)∥Aqw(x)dx for all f∈LAq(Rn). ii) There exists a positive constant C2 independent of y∈Rn such that ∫∣x∣>2∣y∣∥K(x−y)−K(x)∥Bdx<C2. Then there exists a positive constant C3 such that ∥Tf∥LB1(w)≤C3∥f∥HA1(w) for all f∈HA1(w). Let w∈A1. Assume that K∈Lloc(Rn\{0}) satisfies ∥K∗f∥LB2(w)≤C1∥f∥LA2(w) and ∫∣x∣≥C2∣y∣∥K(x−y)−K(x)∥Bw(x+h)dx≤C3w(y+h)(∀y=0,∀h∈Rn) for certain absolute constants C1, C2, and C3. Then there exists a positive constant C independent of f such that ∥K∗f∥LB1(w)≤C∥f∥HA1(w) for all f∈HA1(w).
Cite
@article{arxiv.2209.04033,
title = {Banach space valued $H^p$ spaces with $A_p$ weight},
author = {Sakin Demir},
journal= {arXiv preprint arXiv:2209.04033},
year = {2023}
}