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Re: Eigenvalue bug in Mathematica 7.0.0

• To: mathgroup at smc.vnet.net
• Subject: [mg101236] Re: Eigenvalue bug in Mathematica 7.0.0
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Sat, 27 Jun 2009 06:05:42 -0400 (EDT)
• References: <h22974$hqb$1@smc.vnet.net>

Hi,

and you have not spend a idea to upgrade to version 7.0.1 ??

Regards
   Jens

Mark Saffman wrote:
> I find that Mathematica V7.0.0 finds incorrect eigenvalues and eigenvectors of the 100 x 100 real symmetric matrix listed below. You can easily check the first eigenvector produced is not a true eigenvector. 
> 
> I get incorrect results running under 
> Windows Vista 64 bit, Windows Server 2003 32 bit, Windows Server 2003 64 bit. I get correct results running under Windows Vista 32 bit. All of the above systems produce correct results if I evaluate with Mathematica V6.0.1.0. 
> 
> I consider this a very serious error. Here is the
> 100 x 100 matrix:
SNIP
>