Dirac, Quantum, Quantum Physics, Study, Learning.
powerful notation system known as bra-ket notation. Bra-ket notation is named after the symbols it uses: “bra” ⟨ and “ket” ⟩, “Bra” is a fancy term for flipping and changing a column of numbers in a specific way and a “ket” is the column vector itself. They represent a vector and its dual space