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arXiv · 2511.15488

Revisiting mixed weak inequalities of Fefferman-Stein type for commutators of Calder\'on-Zygmund operators: an improvement

Rocío Ayala·Fabio Berra·Gladis Pradolini
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Abstract

In this paper we establish mixed weak inequalities of Fefferman-Stein type for Calder\'on-Zygmund operators and their commutators, improving some previous results known in the literature. The main estimates also generalize the classical weighted weak Fefferman-Stein inequalities proved in [19] and [22]. In order to obtain the main results, our approach is to give a strong Fefferman-Stein type inequality for the operators involved with respect to an adequate measure.

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Rocío Ayala, Fabio Berra, Gladis Pradolini. 2025-11-19. Revisiting mixed weak inequalities of Fefferman-Stein type for commutators of Calder\'on-Zygmund operators: an improvement. https://arxiv.org/abs/2511.15488

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