Latex符号

上标

• $\hat{x}$ : \(\hat{x}\)
• $\widehat{x}$ : \(\widehat{x}\)
• $\tilde{x}$ : \(\tilde{x}\)
• $\widetilde{x}$ : \(\widetilde{x}\)
• $\dot{x}$ : \(\dot{x}\)
• $\overline{x}$: \(\overline{x}\)

希腊字母

• $\alpha$ : \(\alpha\)
• $\beta$ : \(\beta\)
• $\lambda$ : \(\lambda\)
• $\varphi$ : \(\varphi\)
• $\delta$ : \(\delta\)
• $\omega$ : \(\omega\)
• $\phi$ : \(\phi\)

花体字母

• $\mathcal{ABCDEFGHIHKLMNOPQRSTUVWXYZ}$ : \(\mathcal{ABCDEFGHIHKLMNOPQRSTUVWXYZ}\)
• $\mathbb{ABCDEFGHIHKLMNOPQRSTUVWXYZ}$ : \(\mathbb{ABCDEFGHIHKLMNOPQRSTUVWXYZ}\)
• $\mathscr{ABCDEFGHIHKLMNOPQRSTUVWXYZ}$ : \(\mathbb{ABCDEFGHIHKLMNOPQRSTUVWXYZ}\)

大括号

\[\begin{equation} clip(x, a, b)=\left\{ \begin{aligned} a,\quad &x\le a\\ x, \quad &a<x<b\\ b, \quad &x \ge b \end{aligned} \right. \end{equation} \]

$$
\begin{equation}
    clip(x, a, b)=\left\{
        \begin{aligned}
        a,\quad &x\le a\\ 
        x, \quad &a<x<b\\ 
        b, \quad &x \ge b
        \end{aligned}
        \right.
\end{equation}
$$

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To be continue...