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A characterization of best complex rational approximants in by Ruttan A.

By Ruttan A.

Invaluable stipulations for a given advanced rational approximant R= p/q, degp, degq, to be an area most sensible uniform approximation of a continual complex-valued functionf outlined on a compact subset of the airplane are bought. those stipulations are used to represent whilst a givenR is a most sensible uniform advanced rational approximant off within the specific case the place the extremal set off-R comprises precisely max {n+degp,m+degq}+2 issues.

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