LaTeX Test

来源

a\cdot b 点乘：$a\cdot b$

a\times b 叉乘：$a\times b$

a\div b 点除：$a\div b$

\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：\not
\not= $\not=$
\equiv $\equiv$
\in $\in$
\le $\le$ \ge $\ge$

$\begin{array}{ll|l} \texttt{"normal"} &\texttt{} & ABCDEFGHIJKLMNOPQRSTUVWXYZ\\ \texttt{"blackboard"} &\texttt{\mathbb} &\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"boldface"} &\texttt{\mathbf} &\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"typewriter"} &\texttt{\mathtt} &\mathtt{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"roman"} &\texttt{\mathrm} &\mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"sans-serif"} &\texttt{\mathsf} &\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"calligraphic"}&\texttt{\mathcal} &\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"script"} &\texttt{\mathscr} &\mathscr{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \texttt{"fraktur"} &\texttt{\mathfrak}&\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\\ \end{array}$

$\mathbb{QAQ}$