0021以下、5ちゃんねるからVIPがお送りします2023/07/03(月) 01:48:37.061ID:+MNmLNuV0 Since the Pauli matrices and the identity are hermitian, you can only obtain an hermitian 2x2matrix by combining them. Taking the coefficients λi as real numbers, you indeed get real diagonal elements m11 and m12 , and complex conjugate off-diagonal elements m12 and m21 , as expected for an hermitian matrix. これが>>1とイコールなわけ?