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Article #986

SOME eigenvalues of general matrix

#986
From: Scott Brown
Date: Tue, 19 Jan 1993 17:05
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I am interested in extracting only the positive eigenvalues
of a large (1000x1000) real, general matrix.  My understanding
of Lapack is that its eigenvalue routines compute ALL eigenvalues
and then filter out the ones you want.   Does anybody know of any
public domain Fortran routines that extract only selected
eigenvalues of a matrix?

Thanks,
	Scott
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Newsgroups: sci.math.num-analysis
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!linac!att!att!dptg!ulysses!allegra!princeton!lemmy!hsbrown
From: hsbrown@lemmy.Princeton.EDU (Scott Brown)
Subject: SOME eigenvalues of general matrix
Message-ID: <1993Jan19.170519.17129@Princeton.EDU>
Originator: news@nimaster
Sender: hsbrown@lemmy (Scott Brown)
Nntp-Posting-Host: lemmy.princeton.edu
Organization: Princeton University
Date: Tue, 19 Jan 1993 17:05:19 GMT
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