In the last post, I have entered into the field of trigonometric series. Naturally, this introduces me to Fourier series.
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Ramanujan, the "Euler" of 20th century
The first time I heard of the name Ramanujan was in 2017. At that time, I was wondering on the internet, searching information about i...
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My recent excursion to the general formula for the power series of trigonometric and hyperbolic $\cot(x)$ and $\coth(x)$ leads me further t...
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Dividing power series is a a powerful method to obtain new series from known ones. In this thread, I will show some simple examples of divid...
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