A characterization of semibounded selfadjoint operators

Seppo Hassi, M Kaltenback, H DeSnoo


    6 Citaten (Scopus)
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    For a class of closed symmetric operators S with defect numbers (1, 1) it is possible to define a generalization of the Friedrichs extension, which coincides with the usual Friedrichs extension when S is semibounded. In this paper we provide an operator-theoretic interpretation of this class of symmetric operators. Moreover, we prove that a selfadjoint operator A is semibounded if and only if each one-dimensional restriction of A has a generalized Friedrichs extension.

    Originele taal-2English
    Pagina's (van-tot)2681-2692
    Aantal pagina's12
    TijdschriftProceedings of the american mathematical society
    Nummer van het tijdschrift9
    StatusPublished - sep.-1997

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