Vector

Symbols

To print a vector, we can use the \vec command.

\vec{v}

$\vec{v}$

You can also use \overrightarrow or \overleftarrow.

\overrightarrow{v}
\overleftarrow{v}

$\overrightarrow{v} \ \ \overleftarrow{v}$

It is also possible to use the \mathbf command if you want to print a bold vector.

\mathbf{v}

$\mathbf{v}$

If you want to print $\mathbf{v} = (v_1, v_2, \dots, v_n)^T$ , the method is analogous to the matrix.

\begin{pmatrix}
v_1 \\
v_2 \\
\vdots \\
v_n
\end{pmatrix}

\begin{pmatrix} v_1 \cr v_2 \cr \vdots \cr v_n \end{pmatrix}

You can also use:

\begin{bmatrix} for square brackets $\begin{bmatrix}v_1\end{bmatrix}$ .
\begin{Bmatrix} for double square brackets $\begin{Bmatrix}v_1\end{Bmatrix}$ .
\begin{matrix} for nothing $\begin{matrix}v_1\end{matrix}$ .
\begin{vmatrix} for vertical bars $\begin{vmatrix}v_1\end{vmatrix}$ .
\begin{Vmatrix} for double vertical bars $\begin{Vmatrix}v_1\end{Vmatrix}$ .

You may want to check the matrix article to learn how to print matrices in latex.