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Necessary and sufficient conditions of harmonicity of functions of infinitely many variables (Jacobian case) |
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| Authors: | M N Feller |
| Abstract: | A criterion of harmonicity of functions in a Hilbert space is given in the case of weakened mutual dependence of the second derivatives. Ukrainian Scientific and Industrial Wood Working Concern, Kiev. Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 46, No. 6 pp. 785–788, June, 1994 |
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