Neural network approximation of several variable functions

The main result of the work is as follows: in the Chebyshev–Hermite weighted integral metric, it is possible to approximate any function of sufficiently general form by neural network. The approximating net consists of two layers, where the first uses any predefined sigmoid function of activation and second uses linear-threshold function. The Chebyshev–Hermit weight is chosen because it lets one to imitate receptors distribution for example in an eye of a human or some mammal.