From: "Bruno Luong" <b.luong@fogale.findmycountry>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Eigenvectors with Identical Eigenvalues Lose orthogonality?
Date: Fri, 6 Aug 2010 18:30:33 +0000 (UTC)
Organization: FOGALE nanotech
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"NIcholas " <> wrote in message <i3hj6f$225$>...

> Does MATLAB detect symmetry and use a different algorithm for eig?

Yes, not only for EIG but many other linear algebra functions.