Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4620487 | Journal of Mathematical Analysis and Applications | 2009 | 12 Pages |
Abstract
Kreĭn's formula provides a parametrization of the generalized resolvents and Štraus extensions of a closed symmetric operator with equal possibly infinite defect numbers in a Hilbert space in terms of Nevanlinna families in a parameter space. The aim of this note is to give a simple complete analytical proof of Kreĭn's formula.
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