Ket notation ·Mathematically,〉is a column vector. ·And(is a row vector. ·yΦ)is the inner product between the vectorsΦ)andlψ). ·〈ylMlψ〉is just the quadratic formψrMp.Ket notation • Mathematically, ⋅ is a column vector. • And ⋅ is a row vector. • 𝜓 𝜙 is the inner product between the vectors 𝜙 and 𝜓 . • 𝜓 𝑀 𝜓 is just the quadratic form 𝜓 𝑇𝑀𝜓