(1) Instituut voor Wiskunde en Informatica, Rijksuniversiteit Groningen, Postbus 800, 9700 AV Groningen, Nederland;(2) Department of Mathematics, Ulyanovsk State Pedagogical Institute, Ulyanovsk, Russia
Abstract:
We study module spaces for linear relations (multi-valued operators) in a Hilbert space. The defect spaces are not required to be finite-dimensional. In particular we pay attention to module spaces for symmetric relations.