On lifting of operators to Hilbert spaces induced by positive selfadjoint operators
Date
2005
Authors
Cojuhari, P.
Gheondea, A.
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We introduce the notion of induced Hilbert spaces for positive unbounded operators and show that the energy spaces associated to several classical boundary value problems for partial differential operators are relevant examples of this type. The main result is a generalization of the Krein-Reid lifting theorem to this unbounded case and we indicate how it provides estimates of the spectra of operators with respect to energy spaces. © 2004 Elsevier Inc. All rights reserved.
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Journal of Mathematical Analysis and Applications
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Academic Press
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English