Delimiters are parentheses, braces, or other characters used to mark the start and end of subformulas. This formula has three sets of parentheses delimiting the three subformulas.
(z-z_0)^2 = (x-x_0)^2 + (y-y_0)^2
The delimiters do not need to match, so you can enter \( [0,1) \).
Here are the common delimiters:
| Delimiter | Command | Name |
|---|---|---|
| ( | ( |
Left parenthesis |
| ) | ) |
Right parenthesis |
| \} |
{ or \lbrace
|
Left brace |
| \{ |
} or \rbrace
|
Right brace |
| [ |
[ or \lbrack
|
Left bracket |
| ] |
] or \rbrack
|
Right bracket |
| ⌊ | \lfloor |
Left floor bracket |
| ⌋ | \rfloor |
Right floor bracket |
| ⌈ | \lceil |
Left ceiling bracket |
| ⌉ | \rceil |
Right ceiling bracket |
| ⟨ | \langle |
Left angle bracket |
| ⟩ | \rangle |
Right angle bracket |
| / | / |
Slash, or forward slash |
| \ | \backslash |
Reverse slash, or backslash |
| | |
| or \vert
|
Vertical bar |
| ‖ |
\| or \Vert
|
Double vertical bar |
The mathtools package allows you to create commands for paired delimiters. For instance, if you put \DeclarePairedDelimiter\abs{\lvert}{\rvert} in your preamble then you get two commands for single-line vertical bars (they only work in math mode). The starred version, such as \abs*{\frac{22}{7}}, has the height of the vertical bars match the height of the argument. The unstarred version, such as \abs{\frac{22}{7}}, has the bars fixed at a default height. This version accepts an optional argument, as in \abs[size
command]{\frac{22}{7}}, where the height of the bars is given in size command, such as \Bigg. Using \lVert and \rVert as the symbols will give you a norm symbol with the same behavior.
| • \left & \right | Automatically sized delimiters. | |
| • \bigl & \bigr etc. | Manually sized delimiters. |
© 2007–2018 Karl Berry
Public Domain Software
http://latexref.xyz/Delimiters.html