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Necessary and sufficient conditions of harmonicity of functions of infinitely many variables (Jacobian case)

A criterion of harmonicity of functions in a Hilbert space is given in the case of weakened mutual dependence of the second derivatives.

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Bibliographic Details
Date:	1994
Main Authors:	Feller, M. N., Феллер, М. Н.
Format:	Article
Language:	Russian English
Published:	Institute of Mathematics, NAS of Ukraine 1994
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/5709
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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