Science, Writing, Physics, Mathematics, Quantum Physics.
this called a ket? Why do we represent wave functions with kets? Well, because related to a ket is a quantity known as a bra: ⟨Ψ| If you haven’t figured it out already, the bra and the ket unimaginatively stem from the word bracket. ⟨Ψ| the bra |Ψ⟩ the ket Now a |Ψ⟩ and its corresponding ⟨Ψ| are