Re: [Maxima-discuss] ratsimp not working as expected

[Thomas D. D. <to...@wa...>]

On 03/07/14 10:20, andre maute wrote:
>
> @Thomas: what sort of linux distribution do you have?
>


 > uname -a
Linux P9X79 3.2.0-38-generic #61-Ubuntu SMP Tue Feb 19 12:18:21 UTC 2013 
x86_64 x86_64 x86_64 GNU/Linux
 > lsb_release -a
LSB Version: 
core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 12.04.4 LTS
Release:        12.04
Codename:       precise


I built and installed gcl 2.6.10 in /usr/local
 > ./configure --enable-ansi --enable-readline
 > make
 > sudo make install

Then, I built and installed maxima 5.32.1 in /usr/local
 > ./configure --enable-gcl
 > make
 > make check
...
No unexpected errors found out of 9,733 tests.
real time       :    109.430 secs
run-gbc time    :     96.540 secs
child run time  :      0.430 secs
gbc time        :     10.890 secs

 > sudo make install

 > which gcl
/usr/local/bin/gcl
 > which maxima
/usr/local/bin/maxima

 > maxima
Maxima 5.32.1 http://maxima.sourceforge.net
using Lisp GNU Common Lisp (GCL) GCL 2.6.10 (a.k.a. GCL)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) display2d : false;

(%o1) false
(%i2) d : 4$
(%i3) A : genmatrix(lambda([k,l],v[[k,l]]-v[[0,l]]),d,d)$
(%i4) detA : factor(determinant(A))$
(%i5) AinvT : transpose(invert(A))$
(%i6) AinvT : ratsimp(AinvT)$ /* error trigger */
(%i7) zz : [0,-1,0,0]$
(%i8) h1 : transpose(matrix(zz))$
(%i9) h2 : AinvT.h1$
(%i10) h3 : sum(h2[m,1]^2,m,1,d)*detA^2$
(%i11) res : ratsimp(h3)$ /* chokes if trigger is commented */
(%i12) res:ratsimp(h3)$

Is this the correct sequence of input to generate the problem?

Tom Dean