English

Compactness of commutators of rough singular integrals

Classical Analysis and ODEs 2025-03-17 v2 Functional Analysis

Abstract

We study the two-weighted off-diagonal compactness of commutators of rough singular integral operators TΩT_\Omega that are associated with a kernel ΩLq(Sd1)\Omega\in L^q(\mathbb{S}^{d-1}). We establish a characterisation of compactness of the commutator [b,TΩ][b,T_\Omega] in terms of the function bb belonging to a suitable space of functions with vanishing mean oscillation. Our results expand upon the previous compactness characterisations for Calder\'on-Zygmund operators. Additionally, we prove a matrix-weighted compactness result for [b,TΩ][b,T_\Omega] by applying the so-called matrix-weighted Kolmogorov-Riesz theorem.

Keywords

Cite

@article{arxiv.2503.05390,
  title  = {Compactness of commutators of rough singular integrals},
  author = {Aapo Laukkarinen and Jaakko Sinko},
  journal= {arXiv preprint arXiv:2503.05390},
  year   = {2025}
}

Comments

22 pages; added acknowledgements and a remark and corrected typos