2017
Том 69
№ 9

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

Feller M. N.

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Abstract

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

English version (Springer): Ukrainian Mathematical Journal 46 (1994), no. 6, pp 857-862.

Citation Example: Feller M. N. Necessary and sufficient conditions of harmonicity of functions of infinitely many variables (Jacobian case) // Ukr. Mat. Zh. - 1994. - 46, № 6. - pp. 785–788.

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