Path: news.mathworks.com!not-for-mail
From: "Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid>
Newsgroups: comp.soft-sys.matlab
Subject: Re: checki if a matrix is positive-semidefinite
Date: Sat, 5 Jan 2008 00:57:55 +0000 (UTC)
Organization: The MathWorks, Inc.
Lines: 11
Message-ID: <flmkmj$693$1@fred.mathworks.com>
References: <21285762-825c-4d9b-8323-6e9e65fe1cfc@j78g2000hsd.googlegroups.com>
Reply-To: "Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid>
NNTP-Posting-Host: webapp-03-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1199494675 6435 172.30.248.38 (5 Jan 2008 00:57:55 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Sat, 5 Jan 2008 00:57:55 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 1187260
Xref: news.mathworks.com comp.soft-sys.matlab:444435


"deluded.soul@gmail.com" <deluded.soul@gmail.com> wrote in message 
<21285762-825c-4d9b-8323-6e9e65fe1cfc@j78g2000hsd.googlegroups.com
>...
> How can I check if a given square matrix is positive-semidefinite in
> Matlab?
-----------
  The matrix, A, is positive semidefinite if all the eigenvalues of its Hermitian 
part, (A+A')/2, are non-negative.

Roger Stafford