Matrices: Intro

Visual comparison between matrix styles:

Example # 8 9 10 11 12 13
Matrix $\begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{bmatrix}$ $\begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{pmatrix}$ $\begin{Bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{Bmatrix}$ $\begin{vmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{vmatrix}$ $\begin{Vmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{Vmatrix}$ $\begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix}$
Style Type Square brackets Parentheses Curly braces Vertical bars Double vertical bars None
$\LaTeX$ Matrix Environment Name
bmatrix
pmatrix
Bmatrix
vmatrix
Vmatrix
matrix

In these lecture notes, we'll use

bmatrix
matrices (due to stylistic reasons: bracket matrices look stable and solid.) The code for the
bmatrix
in example #8 is
$\begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{bmatrix}$
.