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MathJax is a Javascript display engine for mathematical formulas like ( (b pm sqrt{b^2-4ac})/(2a) )

[ vec{v} imes vec{w} = egin{vmatrix} vec{i} & vec{j} & vec{k} \ rac{partial vec{v}}{partial x} & rac{partial vec{v}}{partial y} & rac{partial vec{v}}{partial z} \ rac{partial vec{w}}{partial x} & rac{partial vec{w}}{partial y} & rac{partial vec{w}}{partial z} \ nd{vmatrix} ]

When using it on Abel, just add a block of script here [TXT], then include LaTeX command in ( ) brackets or [ ] brackets. Here is a test page.

Simplicity, Clarity, Generality B.W. Kernighan, R. Pike, in "The Practice of Programming".