[線代] orthogonally diagonalizable matrix
For a orthogonally diagonalizable matrix A, there exists a square matrix P wit
h orthogonal columns and P^T = P^-1, such that A = PDP^-1 = PDP^T.
我想請教這個 P 的 columns 是不是必然為 orthonormal?
因為:
P^T P = P^-1 P = I implies columns of P {u1, ... , un} 為 orthonormal set
如果是的話, 為何課本在講 orthogonally diagonalizable 只說 P 為 orthogonal, 沒
提說
P 為 orthonormal ?
謝謝
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※ 編輯: stitchris (223.140.9.115), 05/31/2016 17:40:27
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