David's Blog

Living a quiet life in Coquitlam, B.C.

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Location: Coquitlam, British Columbia, Canada

Sunday, July 18, 2010

Eigenvalue and Eigenvector Calculator

The web page to which the title of this post is hot linked is the most recent utility I have added for computing the eigenvalues and eigenvectors of a real general matrix. It accepts square matrices of up to size twelve by twelve (this limit was arbitrarily picked by me, because that was the largest size matrices with which I worked during my undergraduate engineering studies).

As cited on the page itself, this eigenvalue and eigenvector solver is a translation of routines that come from the EISPACK collection of routines, specifically, balanc, hqr2, elmhes, eltran, and balbak.

Note that the results of the computation may be complex, but the inputs are all assumed to be real entries.

Also note that this utility can solve symmetric matrices, but using a program specifically written for symmetric matrices would be more efficient.

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