How to write matrices in Latex ? matrix, pmatrix, bmatrix, vmatrix, Vmatrix. Here are few examples to write quickly matrices.

{*Thanks to Miss Paola Estrada for the fix.}

## LateX pmatrix, bmatrix, vmatrix, Vmatrix

pmatrix, bmatrix, vmatrix, Vmatrix are Latex environments: -* p for parentheses -* b for brackets -* v for verts -* B for braces -* V for double verts.

## How to write an m x n matrix in LaTeX

How to write an m x n matrix with big parentheses

$\begin{equation*} A_{m,n} = \begin{pmatrix} a_{1,1} & a_{1,2} & \cdots & a_{1,n} \\ a_{2,1} & a_{2,2} & \cdots & a_{2,n} \\ \vdots & \vdots & \ddots & \vdots \\ a_{m,1} & a_{m,2} & \cdots & a_{m,n} \end{pmatrix} \end{equation*}$

## Examples matrix 3 x 3 in LaTeX

With parentheses:

$\begin{equation*} A = \begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{pmatrix} \end{equation*}$

With brackets:

$\begin{equation*} B = \begin{bmatrix} a & b & c \\ d & e & f \\ g & h & i \end{bmatrix} \end{equation*}$

## LateX matrix with no bracket

Without brackets:

$$$\begin{matrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end{matrix}$$$

## LateX matrix determinant / vertical bar bracket

With vertical bar brackets:

$$$\begin{vmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end{vmatrix}$$$

## Latex matrix with curly brackets

With curly brackets:

$$$\begin{Bmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end{Bmatrix}$$$

## Latex matrix with double vertical bar brackets

With double vertical bar brackets:

$$$\begin{Vmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end{Vmatrix}$$$

## Latex small inline matrix

Use smallmatrix environment

I love small matrice such $\big(\begin{smallmatrix} a & b\ c & d \end{smallmatrix}\big)$

## Examples matrix 2 x 2 in LaTeX

Here are examples with matrix 2x2 with pmatrix, bmatrix, vmatrix, Vmatrix environments:

$\begin{matrix} a & b \\ c & d \end{matrix} \quad \begin{pmatrix} a & b \\ c & d \end{pmatrix} \quad \begin{bmatrix} a & b \\ c & d \end{bmatrix} \quad \begin{vmatrix} a & b \\ c & d \end{vmatrix} \quad \begin{Vmatrix} a & b \\ c & d \end{Vmatrix}$