RT Journal Article T1 The history of a general criterium on spaceability A1 Sánchez de los Reyes, Víctor Manuel AB There are just a few general criteria on spaceability. This survey paper is the history of one of the first ones. Let I1 and I2 be arbitrary operator ideals and E and F be Banach spaces. The spaceability of the set of operators I1(E, F)\ I2(E, F) is studied. Before stating the criterium, the paper summarizes the main results about lineability and spaceability of differences between particular operator ideals obtained in recent years. They are the seed of the ideas contained in the general criterium. PB De Gruyter Open Ltd SN 23915455 YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/17815 UL https://hdl.handle.net/20.500.14352/17815 LA eng DS Docta Complutense RD 4 may 2024