# Gents how do I write Bra and Ket vectors here

Gents how do I write Bra and Ket vectors here, I ve gone through the help documentation, but I could not find, I saw one equation as an example but I failed to identify Bra and Ket associated codes

Thks

ZapperZ
Staff Emeritus
Neitrino said:
Gents how do I write Bra and Ket vectors here, I ve gone through the help documentation, but I could not find, I saw one equation as an example but I failed to identify Bra and Ket associated codes

Thks

Er.. what's wrong with using "<", ">", and "|"?

Zz.

"$$\newcommand{\mean}{{<\!\!{#1}\!\!>}} \newcommand{\braket}{{<\!\!{#1|#2}\!\!>}} \newcommand{\braketop}{{<\!\!{#1|\hat{#2}|#3}\!\!>}} \braket{\phi}{\psi} \equiv \int \phi^*(x) \psi(x)\,dx$$"

Ive seen such equation for Bra/Ket vectors and that confused me, sine i failed to identify this code

$\left | \psi \right \rangle$

latex \left | \psi \right \rangle /latex

$\left \langle \psi \right |$

latex \left \langle \psi \right | /latex

$\left \langle \psi \right. \left | \psi \right \rangle$

latex \left \langle \psi \right. \left | \psi \right \rangle /latex

Note: The "latex" and "/latex" should be enclosed in square brackets to make the equation appear.

George Jones
Staff Emeritus
Gold Member
Try this.

$$\frac{d}{dt} \left| \psi \right> = \left| \frac{d \psi}{dt} \right>$$

Regards,
George

$$\langle \frac{a}{b}\rangle$$

Galileo
$$\langle ^\wedge \smile ^\wedge \rangle$$ 