trigonometric series (Q1149336)
sum of sines and cosines with corational frequencies
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Current Data About trigonometric series
(P279) (Q1474614)
(P527) (Q93344)
(P2534) A_{0}+\displaystyle\sum_{n=1}^{\infty}(A_{n} \cos{nx} + B_{n} \sin{nx})
(P6104) (Q8487137)