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Mat. Zametki, 2024 Volume 116, Issue 3, Pages 327–338 (Mi mzm14186)

On the compactness of integral operators with homogeneous kernels in local Morrey spaces

O. G. Avsyankin, S. S. Ashihmin

Southern Federal University, Rostov-on-Don

Abstract: In local Morrey spaces we consider an operator that is the product of a multidimensional integral operator and operators of multiplication by essentially bounded functions. At the same time, we assume that the kernel of the integral operator is homogeneous of degree $(-n)$ and invariant under all rotations. Sufficient conditions are obtained for the compactness of such an operator. We also study the compactness of an operator with a homogeneous kernel and bounded characteristic.

Keywords: local Morrey space, integral operator, homogeneous kernel, multiplication operator, compactness.

UDC: 517.9

MSC: 47G10

Received: 11.11.2023
Revised: 28.03.2024

DOI: 10.4213/mzm14186


 English version:
Mathematical Notes, 2024, 116:3, 397–407


© Steklov Math. Inst. of RAS, 2024