Latex and web authoring -- jsMath -- A very convenient tool for typesetting math formulas in a webpage. One inputs the Latex codes directly and the package outputs math formulas. For example, \left\vert\int_0^1 f(x)g(x)\,dx \right\vert \leq \left(\int_0^1 \left\vert f(x) \right\vert^p \,dx\right)^\frac{1}{p} \left(\int_0^1 \left\vert g(x) \right\vert^q \,dx\right)^\frac{1}{q};
\left\Vert f \right\Vert_{F_\alpha^p}=\left( \int_{\mathbb{C}}\left\vert f(z) e^{-\frac{\alpha}{2}\left\vert z \right\vert^2}\right\vert^p \,dA(z)\right)^\frac{1}{p}
Click on the jsMath box on the lower right (or alt-click on any formula) to open a configuration box. Double click on formula to see the Latex codes. Install the Tex fonts and select the corresponding option in the jsMath box to make the formulas look really nice.