English

Bloom type upper bounds in the product BMO setting

Classical Analysis and ODEs 2019-04-10 v2

Abstract

For a bounded singular integral TnT_n in Rn\mathbb{R}^n and a bounded singular integral TmT_m in Rm\mathbb{R}^m we prove that [Tn1,[b,Tm2]]Lp(μ)Lp(λ)[μ]Ap,[λ]ApbBMOprod(ν), \| [T_n^1, [b, T_m^2]] \|_{L^p(\mu) \to L^p(\lambda)} \lesssim_{[\mu]_{A_p}, [\lambda]_{A_p}} \|b\|_{\operatorname{BMO}_{\textrm{prod}}(\nu)}, where p(1,)p \in (1,\infty), μ,λAp\mu, \lambda \in A_p and ν:=μ1/pλ1/p\nu := \mu^{1/p}\lambda^{-1/p}. Here Tn1T_n^1 is TnT_n acting on the first variable, Tm2T_m^2 is TmT_m acting on the second variable, ApA_p stands for the bi-parameter weights of Rn×Rm\mathbb{R}^n \times \mathbb{R}^m and BMOprod(ν)\operatorname{BMO}_{\textrm{prod}}(\nu) is a weighted product BMO space.

Keywords

Cite

@article{arxiv.1810.09303,
  title  = {Bloom type upper bounds in the product BMO setting},
  author = {Kangwei Li and Henri Martikainen and Emil Vuorinen},
  journal= {arXiv preprint arXiv:1810.09303},
  year   = {2019}
}

Comments

This version to appear in J. Geom. Anal.; 18 pages

R2 v1 2026-06-23T04:48:22.535Z