Eqs. (35)–(36): $MP_-M^\dagger=P_+$, so correcting by $M$ after the result $-1$ gives $P_+|\psi\rangle$

Initializing...

Eqs. (35)–(36): $MP_-M^\dagger=P_+$, so correcting by $M$ after the result $-1$ gives $P_+|\psi\rangle$ · Prove2Me