LaTeX doesn't have a built-in command for a readily available "third bracket" style in the same way it has [ ] ( ) { }. The references provided show how to create the standard brackets but don't offer a specific command for a pre-defined "third bracket". However, there are a few interpretations and ways to achieve the desired result depending on what you consider a "third bracket":
1. Angle Brackets:
If by "third bracket" you mean angle brackets, these are available using the commands \langle and \rangle. According to the reference:
- Left angle bracket:
\langle - Right angle bracket:
\rangle
Example:
$\langle x, y \rangle$This will render as: ⟨x, y⟩
2. Double Square Brackets (Semantic Brackets):
You might want to create double square brackets, often used to represent semantic brackets. This can be achieved by simply using \[ twice for the left bracket and \] twice for the right bracket. According to the reference:
- Left square bracket:
[ - Right square bracket:
]
Example:
$[[ x, y ]]$This renders as: [[x, y]]
3. Custom Brackets:
If you need a completely different style of bracket, you'll likely need to define a custom command or utilize a package that offers more bracket options. This goes beyond the scope of the references provided. For example, you might need to construct a bracket using scalable lines or characters, which involves more advanced LaTeX techniques.
Here's a summary of how to produce standard brackets as per the reference:
| Bracket Type | Left | Right | LaTeX Command |
|---|---|---|---|
| Parenthesis | ( | ) | ( ) |
| Curly Braces | { | } | \{ \} |
| Square Brackets | [ | ] | [ ] |
| Angle Brackets | ⟨ | ⟩ | \langle \rangle |
