上标
$\hat{x}$: \(\hat{x}\)$\widehat{x}$: \(\widehat{x}\)$\tilde{x}$: \(\tilde{x}\)$\widetilde{x}$: \(\widetilde{x}\)$\dot{x}$: \(\dot{x}\)
希腊字母
$\alpha$: \(\alpha\)$\beta$: \(\beta\)$\lambda$: \(\lambda\)$\varphi$: \(\varphi\)$\delta$: \(\delta\)$\omega$: \(\omega\)$\phi$: \(\phi\)
To be continue...