math

Links

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MathML editor | best visualization of complex numbers I have seen | Fourier visualisation | The Scientist and Engineer's Guide to Digital Signal Processing
<π> Numbers

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$\pi = 4\sum _{k=1}^n\frac{(-1{)}^{k+1}}{2k-1}$;

{...} Series

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$\sum _n\frac{1}{n^s}=\prod _p\frac{1}{1-p^{-s}}, \{p,n > 0\} \in \mathrm{\mathbb{N}}$;

a/b Equations

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$e^{j\pi }+1=0$; $\underset{x\to \infty }{\lim }\frac{\mathrm{\pi }\left(\mathrm{x}\right)}{{\displaystyle \frac{x}{\ln \left(x\right) }}}=1$; $x_{n+1}=k\times x_n\times (1 - x_n)$