
Review of Short Phrases and Links 
This Review contains major "Trigonometric Polynomial" related terms, short phrases and links grouped together in the form of Encyclopedia article.
 A trigonometric polynomial can be considered a periodic function on the real line, with period some multiple of 2π, or as a function on the unit circle.
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 For trigonometric interpolation, this function has to be a trigonometric polynomial, that is, a sum of sines and cosines of given periods.
Trigonometric Polynomial
 A trigonometric polynomial of degree N has a maximum of N roots in any open interval [ a, a + 2π) with a in R.
 For instance, rational interpolation is interpolation by rational function s, and trigonometric interpolation is interpolation by trigonometric polynomial s.
 This can be seen as a form of polynomial interpolation with harmonic base functions, see trigonometric interpolation and trigonometric polynomial.
Categories
 Trigonometric Interpolation
 Periodic Function
 Rational Function
 Polynomial Interpolation
 Interval

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