
arXiv: 1210.1738
We introduce Lorentz spaces and with variable exponents. We prove several basic properties of these spaces including embeddings and the identity . We also show that these spaces arise through real interpolation between and . Furthermore, we answer in a negative way the question posed in whether the Marcinkiewicz interpolation theorem holds in the frame of Lebesgue spaces with variable integrability.
Maximal functions, Littlewood-Paley theory, 46E30, 42B25, 46B70, Interpolation between normed linear spaces, variable exponents, Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.), Functional Analysis (math.FA), weak-type spaces, real interpolation, Mathematics - Functional Analysis, Marcinkiewicz interpolation, Lorentz spaces, FOS: Mathematics, maximal operator, variable integrability
Maximal functions, Littlewood-Paley theory, 46E30, 42B25, 46B70, Interpolation between normed linear spaces, variable exponents, Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.), Functional Analysis (math.FA), weak-type spaces, real interpolation, Mathematics - Functional Analysis, Marcinkiewicz interpolation, Lorentz spaces, FOS: Mathematics, maximal operator, variable integrability
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