Department of Mathematics, University of Zaragoza, 50009-Zaragoza, Spain ; Department of Mathematics, Florida Atlantic University, Boca Raton, Florida 33431 ; Department of Mathematics, University of Zaragoza, 50009-Zaragoza, Spain
Abstract:
The class of functions for which the commutator with the Hardy-Littlewood maximal function or the maximal sharp function are bounded on are characterized and proved to be the same.