32 If A is an m x n matrix with columns a i , show that vec(A) n i 1 (a i x e i ) vec n i 1 a i e i , where e i is the i th column of the n x n identity matrix ...

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32. If A is an m x n matrix with columns a i , show that vec(A)...

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32. If A is an m x n matrix with columns a_i, show that vec(A) = Σⁿ_i=1 (a_i x e_i)

= vec[Σⁿ_i=1 a_ie_i], where e_i is the i-th column of the n x n identity matrix.

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Matrices With Applications In Statistics

ISBN: 9780534980382

2nd Edition

Authors: Franklin A Graybill

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Question Posted: Sep 19, 2024 07:03 AM

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32. If A is an m x n matrix with columns a i , show that vec(A) = n i=1 (a i x e i ) = vec[ n i=1 a i e i ], where e i is the i-th column of the n x n identity matrix.
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32. If A is an m x n matrix with columns a i , show that vec(A)...

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Matrices With Applications In Statistics

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