Projective measurement and correlations: examples

[kaje]

Hello,
Can anybody help me to understand the solved example as attached here. How can I follow that using dirac, bra notations.

Regards

 

[DrClaude]

You have to look up a good textbook. For this kind of problem, I suggest J. S. Townsend, A Modern Approach to Quantum Mechanics.

 

[kaje]

How to delete my post and question here please?

 

[berkeman]

No need to delete it -- you got good advice, and others may benefit from seeing that good advice too.