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a question about eig() calculating Hermitian matrix

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Pengke
Pengke 2011-6-27
The doc of eig() says the Lapack routine of ZHEEV is used to calculate the eigenvalues and eigenvectors of a Hermitian matrix. My question is how eig() recognizes the input as a Hermitian matrix? Or should the user specifically tell matlab that it is Hermitian, by certain forms of input of eig()?

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Krishna Kumar
Krishna Kumar 2011-6-28
The function could itself check the property of matrix and assign the suitable routine, not a big task of course. If you want eig to perform a specific factorization, you need to mention it while calling eig.
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Pengke
Pengke 2011-6-28
Thank you Krishna. Does that mean eig() itself is the most optimized routine for eigenvalue problems of Hermitian matrices?

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