... : (5.13) If x = ei , the i-th column of the n n identity matrix, B e i is the i-th column of B , and B H ei is the i-th column of B H , which is the conjugate of the i-th row of B Since conjugation ... but so do, for instance, unitary (and therefore also real orthogonal) matrices: UU H = U H U = I : Thus, Hermitian, real symmetric, unitary, and orthogonal matrices are all normal 68 CHAPTER ... canonical form Finally, in sections 6.4 and 6.5, we set up and solve a particular differential system as an illustrative example 6.1 Scalar Differential Equations of Order Higher than One The first-order...