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