I've just added the mathjax equation displayer to my blog. This will allow me to put some real science up here with the LaTeX I love. I followed the steps outlined here .

Pythagorus' theorem is $a^2 + b^2 = c^2$. The definition of a limit is
$$\lim_{x \rightarrow x_0} f = f_0 \equiv \forall \epsilon: \exists \delta: |f - f_0| < \delta \implies |x - x_0| < \epsilon$$

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