English

Sharp function and weighted $L^{p}$ estimates for pseudo-differential operators with symbols in general H\"{o}rmander classes

Analysis of PDEs 2022-06-22 v1

Abstract

The purpose of this paper is to prove pointwise inequalities and to establish the boundedness on weighted LpL^{p} spaces for pseudo-differential operators TaT_{a} defined by the symbol aSϱ,δma\in S^{m}_{\varrho,\delta} with 0ϱ1,0\leq\varrho\leq1, 0δ<10\leq\delta<1. Firstly, we prove that if mn(1ϱ)/2m\leq-n(1-\varrho)/2, then (Tau)(x)M(u2)1/2(x)(T_{a}u)^{\sharp}(x)\lesssim M(|u|^{2})^{1/2}(x) for all xRnx\in\mathbb{R}^{n} and all Schwartz function uu. Secondly, it is shown that if 1r21\leq r\leq2 and mnr(1ϱ)m\leq-\frac{n}{r}(1-\varrho), then for any ω\omega belongs to the class of Muckenhoupt weights Ap/rA_{p/r} with r<p<r<p<\infty, these operators are bounded on LωpL^{p}_\omega. Moreover, these results are sharp on the bound of mm.

Keywords

Cite

@article{arxiv.2206.09825,
  title  = {Sharp function and weighted $L^{p}$ estimates for pseudo-differential operators with symbols in general H\"{o}rmander classes},
  author = {Guangqing Wang},
  journal= {arXiv preprint arXiv:2206.09825},
  year   = {2022}
}
R2 v1 2026-06-24T11:57:23.070Z