Also sprach Zarathustra

Mathematics, Philosophy, Classical music, Art.
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"Whereof one cannot speak, thereof one must be silent."
Ludwig Wittgenstein, Tractatus Logico-Philosophicus

Press the thanks button, you dirty $\displaystyle{(2^{2^U}+1)\sum_{n=1}^{\infty}\frac{(-1)^nk^{2n}}{(2n)!}}$