- #1

- 465

- 4

but what is the bra?

this was given to us in class:

<a|=a

_{1}<e

_{1}|+a

_{2}<e

_{2}|= (a

_{1}

^{*}a

_{2}

^{*})

(where e

_{1}and e

_{2}are the unit basis vectors)

but why the complex conjugates? where'd they come from?

and the professor gave us this in class:

<a|b>=a

_{1}

^{*}b

_{1}<e

_{1}|e

_{1}>+a

_{1}

^{*}b

_{2}<e

_{1}|e

_{2}>+a

_{2}

^{*}b

_{1}<e

_{2}|e

_{1}>+a

_{2}

^{*}b

_{2}<e

_{2}|e

_{2}>

i understand the pattern but i am still at a loss as to where this all came from