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The (Euler) gamma function $\Gamma(z)$ is defined by the integral $$\Gamma(z) = \int_0^{ \infty } e^{-t} t^{z} \frac{dt}{t}$$ for Re$(z) > 0$. It satisfies the functional equation $$\Gamma(z+1) = z \Gamma(z),$$ and can thus be continued into a meromorphic function on the complex plane, whose poles are at the non-positive integers $\{0,-1,-2,\ldots\}$.

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• Review status: reviewed
• Last edited by Nicolas Mascot on 2015-07-29 00:18:41
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