A1 Refereed original research article in a scientific journal

Extrapolation and interpolation in generalized Orlicz spaces




AuthorsDavid Cruz-Uribe, Peter Hästö

PublisherAMER MATHEMATICAL SOC

Publication year2018

JournalTransactions of the American Mathematical Society

Journal name in sourceTRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY

Journal acronymT AM MATH SOC

Volume370

Issue6

First page 4323

Last page4349

Number of pages27

ISSN0002-9947

DOIhttps://doi.org/10.1090/tran/7155

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/31020732


Abstract
We prove versions of the Rubio de Francia extrapolation theorem in generalized Orlicz spaces. As a consequence, we obtain boundedness results for several classical operators as well as a Sobolev inequality in this setting. We also study complex interpolation in the same setting and use it to derive a compact embedding theorem. Our results include as special cases classical Lebesgue and Sobolev space estimates and their variable exponent and double phase growth analogs.

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