RT Journal Article T1 Nonlinear subsets of function spaces and spaceability A1 Ruiz Bermejo, César A1 Sánchez de los Reyes, Víctor Manuel AB In this paper, we study the existence of infinite dimensional closed linear subspaces of a rearrangement invariant space on [0,1] every nonzero element of which does not belong to any included rearrangement invariant space of the same class such that the inclusion operator is disjointly strictly singular. We consider Lorentz, Marcinkiewicz and Orlicz spaces. The answer is affirmative for Marcinkiewicz spaces and negative for Lorentz and Orlicz spaces. Also, the same problem is studied for Nakano spaces assuming different hypothesis PB Elsevier SN 0024-3795 YR 2014 FD 2014-12 LK https://hdl.handle.net/20.500.14352/33837 UL https://hdl.handle.net/20.500.14352/33837 LA eng NO Spanish Ministry of Economy and Competitiveness DS Docta Complutense RD 10 may 2025