Is it possible to define in LaTeX documents Latex Help

[Dragonfall]

Is it possible to define in LaTeX documents something like \ket{X} to be \left| X\right> so I don't have to type that every time?

 

[cristo]

If you put this in your preamble \newcommand{\ket}[1]{{\left| {#1} \right>}}, then you can use the command \ket{X}:

$$\newcommand{\ket}[1]{{\left| {#1} \right>}} \ket{X}$$

You can write similar commands for \bra and \braket, say.

 

[Dragonfall]

Awesome, thanks!