Tricki
a repository of mathematical know-how

Polynomial approximation front page

Quick description

It is often useful to know that a function can be approximated by a polynomial. This page has links to articles about different types of polynomial approximation — how to do them or how to prove that they can be done.

To make a function nicer without changing it much, convolve it with an approximate delta function Quick description ( This article explains one way of showing that a continuous function on a closed bounded interval can be uniformly approximated by a polynomial.)