Copyright © 2009 Vagif S. Guliyev. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We consider generalized Morrey spaces ℳp,ω(ℝn) with a general function ω(x,r) defining the Morrey-type norm. We find the conditions on the pair (ω1,ω2) which ensures the boundedness of the maximal operator and Calderón-Zygmund singular integral operators from one generalized Morrey space ℳp,ω1(ℝn) to another ℳp,ω2(ℝn), 1<p<∞, and from the space ℳ1,ω1(ℝn) to the weak space Wℳ1,ω2(ℝn). We also prove a Sobolev-Adams type ℳp,ω1(ℝn)→ℳq,ω2(ℝn)-theorem for the potential operators Iα. In all the cases the conditions for the boundedness are given it terms of Zygmund-type integral inequalities on (ω1,ω2), which do not assume any assumption on monotonicity of ω1,ω2 in r. As applications, we establish the boundedness of some Schrödinger type operators on generalized Morrey spaces related to certain nonnegative potentials belonging to the reverse Hölder class. As an another application, we prove the boundedness of various operators on generalized Morrey spaces which are estimated by Riesz potentials.