View source for Contour integral representation of reciprocal gamma

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<strong>[[Contour integral representation of reciprocal gamma|Theorem]]:</strong> The following formula holds for a [[positively orientation|positively oriented]] [[contour]] $C$ is a path encircling $0$ beginning at and returning to $+\infty$:
$$\dfrac{1}{\Gamma(z)} = \dfrac{i}{2\pi} \displaystyle\oint_C (-t)^{-z}e^{-t} \mathrm{d}t,$$
where $\dfrac{1}{\Gamma}$ denotes the [[reciprocal gamma]] function, $\pi$ denotes [[pi]], and $e^{-t}$ denotes the [[exponential]] function.
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<strong>Proof:</strong> █ 
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