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 You can render *LaTeX* mathematical expressions using **MathJax**, as on [math.stackexchange.com][1]:
 
 The *Gamma function* satisfying $\Gamma(n) = (n-1)!\quad\forall
-n\in\mathbb N$ is via through the Euler integral
+n\in\mathbb N$ is via the Euler integral
 
 $$
 \Gamma(z) = \int_0^\infty t^{z-1}e^{-t}dt\,.