GNU bug report logs - #41223
28.0.50; Calc gives wrong determinant for some matrices with symbolic variables

Previous Next

Package: emacs;

Reported by: Mauro Aranda <maurooaranda <at> gmail.com>

Date: Tue, 12 May 2020 23:26:02 UTC

Severity: normal

Found in version 28.0.50

Done: Mattias Engdegård <mattiase <at> acm.org>

Bug is archived. No further changes may be made.

Full log

View this message in rfc822 format

From: Mattias Engdegård <mattiase <at> acm.org>
To: Mauro Aranda <maurooaranda <at> gmail.com>
Cc: 41223 <at> debbugs.gnu.org
Subject: bug#41223: 28.0.50; Calc gives wrong determinant for some matrices with symbolic variables
Date: Thu, 14 May 2020 11:56:47 +0200

By the way, the change also fixes inversion of matrices such as the one in your example. Previously, Calc would (erroneously) complain that the matrix was singular.
This bug report was last modified 5 years and 11 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.