The solution to the problem would reveal their identities :) Just in case: https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation#Hermitian_conjugate_operator

The solution to the problem would reveal their identities :) Just in case: https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation#Hermitian_conjugate_operator https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation#Hermi... More seriously.. https://en.wikipedia.org/wiki/Binding_(linguistics) https://en.wikipedia.org/wiki/Binding_(linguistics) And its derivatives in CS Etc