To use {$\LaTeX$}, enclose the expression in {$
... $}
symbols for inline math, or {$$
... $$}
for 'display' math.
The wiki MathJax plugin has some predefined macros. It is possible to add more of these, contact Ian if you have a suggestion.
The macros:
macro | result | Equivalent definition |
\ket{a} | {$\ket{a}$} | \newcommand{\ket}[1]{\langle #1 \vert} |
\bra{a} | {$\bra{a}$} | \newcommand{\bra}[1]{\vert #1 \rangle} |
\expect{a} | {$\expect{a}$} | \newcommand{\expect}[1]{\langle #1 \rangle} |
\braket{a}{b} | {$\braket{a}{b}$} | \newcommand{\braket}[2]{\langle #1 \vert #2 \rangle} |
\bigbraket{a}{b}{c} | {$\bigbraket{a}{b}{c}$} | \newcommand{\bigbraket}[3]{\langle #1 \vert #2 \vert #3 \rangle} |