Ombrosi, Sheldy J.Pérez Moreno, Carlos2016-06-152016-06-152016Ombrosi, S.J. y Pérez Moreno, C. (2008). Mixed weak type estimates: Examples and counterexamples related to a problem of E. Sawyer. Colloquium Mathematicum0010-13541730-6302http://hdl.handle.net/11441/42334In this paper we study mixed weighted weak-type inequalities for families of functions, which can be applied to study classic operators in harmonic analysis. Our main theorem extends the key result from D. Cruz-Uribe, J.M. Martell and C. Pérez, Weighted weak-type inequalities and a conjecture of Sawyer, Int. Math. Res. Not., 30 2005, 1849-1871.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Weightsmaximal functionssingular integral operatorsmixed weak-type inequalitiesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.4064/cm4939-6-2016