Dipartimento di Matematica “E. De Giorgi”, Università di Lecce, C.P. 193, Via Per Arnesano, I-73100 Lecce, Italy, IT Departamento de Matemàticas, E.T.S.I.A.M., Universidad de Còrdoba, E-14004 Còrdoba, Spain, ES
Abstract:
We give a representation of the spaces
Hkloc(\Bbb R)?L2(\Bbb R)H^k_{\rm loc}(\Bbb R)\cap L^2(\Bbb R) as Köthe sequence spaces and use some recent topological invariants to investigate their isomorphic classification.