On sharp reiteration theorems and weighted norm inequalities
Jesús Bastero, Mario Milman, Francisco Ruiz (2000)
Studia Mathematica
Similarity:
We prove sharp end forms of Holmstedt's reiteration theorem which are closely connected with a general form of Gehring's Lemma. Reverse type conditions for the Hardy-Littlewood-Pólya order are considered and the maximal elements are shown to satisfy generalized Gehring conditions. The methods we use are elementary and based on variants of reverse Hardy inequalities for monotone functions.