Abstract
We show that integrability properties of integral transforms with kernel depending on the product of arguments (which include in particular, popular Laplace, Hankel, Mittag-Leffler transforms and various others) are better described in terms of Morrey spaces than in terms of Lebesgue spaces. Mapping properties of integral transforms of such a type in Lebesgue spaces, including weight setting, are known. We discover that local weighted Morrey and complementary Morrey spaces are very appropriate spaces for describing integrability properties of such transforms. More precisely, we show that under certain natural assumptions on the kernel, transforms under consideration act from local weighted Morrey space to a weighted complementary Morrey space and vice versa, where an interplay between behavior of functions and their transforms at the origin and infinity is transparent. In case of multidimensional integral transforms, for this goal we introduce and use anisotropic mixed norm Morrey and complementary Morrey spaces.
MSC 2010: Primary 46E30, 42C20; Secondary 44A05, 44A10, 44A30
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Samko, N. Integrability Properties of Integral Transforms Via Morrey Spaces. Fract Calc Appl Anal 23, 1274–1299 (2020). https://doi.org/10.1515/fca-2020-0064
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DOI: https://doi.org/10.1515/fca-2020-0064