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- Newsgroups: sci.math.num-analysis
- Path: 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
- Lines: 12
-
- 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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