Abstract
The main result of this paper is the following. Ifg is any given polynomial of two variables, then
contains all polynomials if and only if
separates points. This result is not valid inR d ford≥4.
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L. Leshno, V. Ya. Lin, A. Pinkus, S. Schocken (1993):Multilayer feedforward networks with a nonpolynomial activation function can approximate any function. Neural Networks,6:861–867.
A. G. Vitushkin, G. M. Henkin (1967):Linear superpositions of functions. Uspekhi Mat. Nauk,22:77–124. (English translation (1967): Russian Math. Surveys,22:77–125.)
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Communicated by Tim N. T. Goodman.
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Pinkus, A., Wajnryb, B. Multivariate polynomials: A spanning question. Constr. Approx 11, 165–180 (1995). https://doi.org/10.1007/BF01203414
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DOI: https://doi.org/10.1007/BF01203414