Novikov, S.Ya.Semenov, Evgeny M.Hernández, Francisco L.2023-06-202023-06-2020020016-266310.1023/A:1014438419455https://hdl.handle.net/20.500.14352/57463An operator A mapping a Banach space E into a Banach space F is called strictly singular (or Kato) if any restriction of A to an infinite-dimensional subspace of E is not an isomorphism. The paper deals with the problem of describing all couples of rearrangement-invariant spaces E↪F for which the embedding operator is strictly singular.engjournal articlehttp://www.springerlink.com/content/quduxdalmpd97215/fulltext.pdfhttp://www.springerlink.comrestricted access517.982.22517.982.27Rearrangement invariant Banach spacestrictly singular embeddingdisjointly strictly singular embeddingRademacher systemexponential Orlicz spaceAnálisis matemático1202 Análisis y Análisis Funcional