superscripts and subscripts are created using the characters ^ and _ respectively
| Code | Display |
|---|---|
a_{n_i} |
$a_{n_i}$ |
\\int_{i=1}^n |
$\int_{i=1}^n$ |
\\sum_{i=1}^{\\infty} |
$\sum_{i=1}^{\infty}$ |
\\prod_{i=1}^n |
$\prod_{i=1}^n$ |
\\cup_{i=1}^n |
$\cup_{i=1}^n$ |
\\cap_{i=1}^n |
$\cap_{i=1}^n$ |
\\oint_{i=1}^n |
$\oint_{i=1}^n$ |
\\coprod_{i=1}^n |
$\coprod_{i=1}^n$ |
| Type | LATEX markup | Renders as |
|---|---|---|
| Parentheses; round brackets | (x+y) |
$(x+y)$ |
| Brackets; square brackets | [x+y] |
$[x+y]$ |
| Braces; curly brackets | \\{ x+y \\} |
$\{ x+y \}$ |
| Angle brackets | \\langle x+y \\rangle |
$\langle x+y \rangle$ |
| Pipes; vertical bars | \\vert x+y \\vert |
$\vert x+y \vert$ |
| Double pipes | \|x+y\| |
$|x+y|$ |
to insert the parentheses or brackets, the \\left and \\right commands are used
When writing multi-line equations with the align, align* or aligned environments, the \\left and \\right commands must be balanced on each line and on the same side of &.
Align 语法中&可近似理解为表格？
The size of the brackets can be controlled explicitly, as shown in this LaTeX code fragment:
\\[
\\Bigg \\langle 3x+7 \\bigg \\rangle
\\]
$\Bigg \langle 3x+7 \bigg \rangle$
The amsmath package provides commands to typeset matrices with different delimiters. Once you have loaded \\\\usepackage{amsmath} in your preamble, you can use the following environments in your math environments:
| Type | LATEX markup | Display |
|---|---|---|
| Plain | \\begin{matrix}1 & 2 & 3\\\\a & b & c\\end{matrix} |
$\begin{matrix}1 & 2 & 3\\a & b & c\end{matrix}$ |
| Parentheses; round brackets | \\begin{pmatrix}1 & 2 & 3\\\\a & b & c\\end{pmatrix} |
$\begin{pmatrix}1 & 2 & 3\\a & b & c\end{pmatrix}$ |
| Brackets; square brackets | \\begin{bmatrix}1 & 2 & 3\\\\a & b & c\\end{bmatrix} |
$\begin{bmatrix}1 & 2 & 3\\a & b & c\end{bmatrix}$ |
| Braces; curly brackets | \\begin{Bmatrix}1 & 2 & 3\\\\a & b & c\\end{Bmatrix} |
$\begin{Bmatrix}1 & 2 & 3\\a & b & c\end{Bmatrix}$ |
| Pipes | \\begin{vmatrix}1 & 2 & 3\\\\a & b & c\\end{vmatrix} |
$\begin{vmatrix}1 & 2 & 3\\a & b & c\end{vmatrix}$ |
| Double pipes | \\begin{Vmatrix}1 & 2 & 3\\\\a & b & c\\end{Vmatrix} |
$\begin{Vmatrix}1 & 2 & 3\\a & b & c\end{Vmatrix}$ |
Use below code to create a small matrix
\\(\\big(\\begin{smallmatrix}
a & b\\\\
c & d
\\end{smallmatrix}\\big)\\)
$\big(\begin{smallmatrix} a & b\\ c & d \end{smallmatrix}\big)$ 可爱捏~