doi:10.1016/j.jfa.2026.111384engAnsorena, José L.Bello, GlenierMutually non isomorphic mixed-norm Lebesgue spacesART-2026-148486We prove that for 1 ≤ p, q ≤ ∞ the mixed-norm spaces Lq (Lp) are mutually non-isomorphic, with the only exception that Lq (L2) is isomorphic to Lq (Lq ) for all 1 < q < ∞.2026http://zaguan.unizar.es/record/16994610.1016/j.jfa.2026.111384http://zaguan.unizar.es/record/169946oai:zaguan.unizar.es:169946JOURNAL OF FUNCTIONAL ANALYSIS 290, 9 (2026), 111384 [31 pp.]byhttps://creativecommons.org/licenses/by/4.0/deed.esinfo:eu-repo/semantics/openAccess