acdot b 点乘：(acdot b)
a imes b 叉乘：(a imes b)
adiv b 点除：(adiv b)
frac{a}{b} 分数：(frac{a}{b})
vec{ab} 向量：(vec{ab})
pmod a (pmod a)
prod _{a}^{b} 基本连乘 (prod _{a}^{b})
prod limits_{i=1}^{n} 角标在上边和下边的连乘 (prod limits_{i=1}^{n})
sum _{a}^{b} 基本连加 (sum _{a}^{b})
sum limits_{i=1} ^{n} 角标在上边和下边的连加 (sum limits_{i=1} ^{n})
否定：
ot
ot= (
ot=)
equiv (equiv)
in (in)
le (le) ge (ge)
(egin{array}{ll|l} exttt{"normal"} & exttt{} & ABCDEFGHIJKLMNOPQRSTUVWXYZ\ exttt{"blackboard"} & exttt{mathbb} &mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"boldface"} & exttt{mathbf} &mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"typewriter"} & exttt{mathtt} &mathtt{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"roman"} & exttt{mathrm} &mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"sans-serif"} & exttt{mathsf} &mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"calligraphic"}& exttt{mathcal} &mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"script"} & exttt{mathscr} &mathscr{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ exttt{"fraktur"} & exttt{mathfrak}&mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\ end{array})
(mathbb{QAQ})