
Best polynomial approximation equal ripple error - wglb
https://www.johndcook.com/blog/2020/03/10/remez-algorithm/
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unlinked_dll
Mathematica does have an implementation of the Parks-McClellan algorithm
(Remez exchange applied to digital filter design) so somewhere in there is a
Remez implementation.

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remcob
I've been studying Chebfun lately, a Matlab library implementing these
approximation techniques. It's written by some of the leading researchers in
the field, and their documentation is so well done that it reads like a
graduate textbook on the subject:

[http://www.chebfun.org/docs/guide/](http://www.chebfun.org/docs/guide/)

In particular chapter 4 is relevant.

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spacedome
Worth looking at also is Approximation Theory and Approximation Practice,
which is centered around Chebfun. Almost everything by Trefethen is unusually
well written, Spectra and Psuedospectra is one of my favorites.

