public inbox for gsl-discuss@sourceware.org
 help / color / mirror / Atom feed
From: Negin Nejati <negin@Glue.umd.edu>
To: gsl-discuss@sourceware.cygnus.com
Subject: Matrix inversion.
Date: Tue, 31 Dec 2002 09:55:00 -0000	[thread overview]
Message-ID: <Pine.GSO.4.21.0201291706550.12978-100000@y.glue.umd.edu> (raw)


Hi,
I am a new user of this library and I have a silly question:
For inverting a matrix shouldn't I first use "gsl_linalg_LU_decomp" function 
to decompose my matrix and then use "gsl_linalg_LU_invert" passing the
results of previous function to it, to invert the matrix? If it is correct
how come the multiplication of the original matrix and it's reverse is not
I?
I'll appreciate any help,
NN.


WARNING: multiple messages have this Message-ID
From: Negin Nejati <negin@Glue.umd.edu>
To: gsl-discuss@sourceware.cygnus.com
Subject: Matrix inversion.
Date: Tue, 29 Jan 2002 14:16:00 -0000	[thread overview]
Message-ID: <Pine.GSO.4.21.0201291706550.12978-100000@y.glue.umd.edu> (raw)
Message-ID: <20020129141600.F_k_OPDdIJyBsMhwVq_CGKGWu-HgVWgGBL8krkd9QVs@z> (raw)


Hi,
I am a new user of this library and I have a silly question:
For inverting a matrix shouldn't I first use "gsl_linalg_LU_decomp" function 
to decompose my matrix and then use "gsl_linalg_LU_invert" passing the
results of previous function to it, to invert the matrix? If it is correct
how come the multiplication of the original matrix and it's reverse is not
I?
I'll appreciate any help,
NN.


             reply	other threads:[~2002-01-29 22:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-31  9:55 Negin Nejati [this message]
2002-01-29 14:16 ` Negin Nejati
2002-12-31  9:55 ` Brian Gough
2002-01-30 11:41   ` Brian Gough
  -- strict thread matches above, loose matches on Subject: below --
2002-07-22  8:24 Matrix Inversion Daniel T Konkle
2001-12-19 13:20 matrix inversion Rooms Frédéric
2001-12-19 13:20 ` Brian Gough
2001-12-19 13:20 Mikael Adlers

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Pine.GSO.4.21.0201291706550.12978-100000@y.glue.umd.edu \
    --to=negin@glue.umd.edu \
    --cc=gsl-discuss@sourceware.cygnus.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).