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Analog of the Krein Formula for Resolvents of Normal Extensions of a Prenormal Operator

We prove a formula that relates resolvents of normal operators that are extensions of a certain prenormal operator. This formula is an analog of the Krein formula for resolvents of self-adjoint extensions of a symmetric operator. We describe properties of the defect subspaces of a prenormal operator...

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Bibliographic Details
Date:	2002
Main Authors:	Dudkin, M. Ye., Дудкін, М. Є.
Format:	Article
Language:	Ukrainian English
Published:	Institute of Mathematics, NAS of Ukraine 2002
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/4092
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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