homework and exercises - A simple notation problem (bra ket notation) - Physics Stack Exchange
wigton physics: Identity matrix in Dirac notation
quantum mechanics - Expectation Value in Bra-ket notation - Physics Stack Exchange
MathType - The bra-ket notation devised by Paul Dirac is used in #QuantumPhysics as a way to make linear algebra operations more expressive. Of course, it is nothing but a rewriting of
Bras, Kets, and Matrices
Solved For the wavefunctions φ and ϕ and the operator A the | Chegg.com