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information on Eigensystem


I am doing a comparison between three methods for finding an eigensystem of
a matrix, Numerical Recipes tqli + tred2, jacobi, and Mathematica's

I would like to acquire info on which algorithm does Mathematica have for
finding it out? What does she do in a case of a real symmetric matrix? I am
asking it because I haven't found anything in the implementation notes.

Thank you for you time,

Borut from Slovenia

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