[sage-devel] Re: pickling vs. default attributes

2011-05-21 Thread Kwankyu Lee
Hi Martin, Thank you for asking this to sage-dev. I want to be more informed about this pickled Sage objects stored in the pickle jar. First let me explain what I understand. The pickle jar is there to ensure that upgrading Sage does not break unpickling of Sage objects pickled in a previous v

[sage-devel] Re: sage-4.7 release schedule

2011-05-21 Thread Andrey Novoseltsev
On May 21, 5:58 pm, Eviatar wrote: > I cannot build ATLAS on 64-bit Ubuntu 11.04, getting this > bug:http://trac.sagemath.org/sage_trac/ticket/9385#comment:40 I am happily using Volker's ATLAS package for a few months: http://trac.sagemath.org/sage_trac/ticket/10226 I have a Turion X2 laptop and

Re: [sage-devel] Re: sage-4.7 release schedule

2011-05-21 Thread Francois Bissey
> I cannot build ATLAS on 64-bit Ubuntu 11.04, getting this bug: > http://trac.sagemath.org/sage_trac/ticket/9385#comment:40 You mean with an atom cpu? This email may be confidential and subject to legal privilege, it may not reflect the views of the University of Canterbury, and it is not guaran

[sage-devel] Re: sage-4.7 release schedule

2011-05-21 Thread Eviatar
I cannot build ATLAS on 64-bit Ubuntu 11.04, getting this bug: http://trac.sagemath.org/sage_trac/ticket/9385#comment:40 -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more option

[sage-devel] Re: sage-4.7 release schedule

2011-05-21 Thread mjung
Hi, I have problems building sage-4.7 on one of my machines (but not on the other one): Removing /home/mjung/sys/lib64/python2.6/site-packages/Python-2.6.4- py2.6.egg-info Writing /home/mjung/sys/lib64/python2.6/site-packages/Python-2.6.4- py2.6.egg-info if test -f /home/mjung/src/sage-4.7/local/

[sage-devel] Re: ECL relocation problem

2011-05-21 Thread Nils Bruin
I think I have found a fix for the ECL relocation problem posted on http://trac.sagemath.org/sage_trac/ticket/11359 Unfortunately, it does involve patching ECL. I don't think Juanjo will be very enthusiastic about incorporating this patch upstream, since the problem is so specific to Sage's desire

Re: [sage-devel] category subclassing problem

2011-05-21 Thread Nicolas M. Thiery
Hi Christian, On Fri, May 20, 2011 at 10:10:37AM +0200, Christian Nassau wrote: > I would like to create a new category that's derived from > AlgebrasWithBasis, but I get an infinite recursion when I ask for the > CartesianProducts: > > Here's a simple example: > >class MyAlgebrasWit

Re: [sage-devel] Re: No plot with plot3d

2011-05-21 Thread Thierry Dumont
Le 21/05/2011 16:36, Jonathan a écrit : OK, I found an Ubuntu VM (11.04) that I hadn't killed. With the patch for launching Jmol from the command line and the Sun Java it definitely works. If you want 4.6.2 to work apply the patch. If that doesn't fix it you will also have to switch from the d

[sage-devel] Re: No plot with plot3d

2011-05-21 Thread Jonathan
OpenJDK VM (used to be IceTea) is the default with Ubuntu and it does work with Jmol. So if things don't work after the patch there is something else wrong with your installation. Jonathan On May 21, 9:36 am, Jonathan wrote: > OK, I found an Ubuntu VM (11.04) that I hadn't killed.  With the pa

[sage-devel] Re: No plot with plot3d

2011-05-21 Thread Jonathan
OK, I found an Ubuntu VM (11.04) that I hadn't killed. With the patch for launching Jmol from the command line and the Sun Java it definitely works. If you want 4.6.2 to work apply the patch. If that doesn't fix it you will also have to switch from the default JavaVM to the Sun/Oracle version.

[sage-devel] Re: No plot with plot3d

2011-05-21 Thread Jonathan
Which java do you have installed? The default with Ubuntu is IcedTea. Last time I checked this was working with the patch, but that could be the problem. Jmol (the 3D application that is launched) is only verified against the Oracle/Sun JavaVM. If you are using IceTea try switching to the Oracl

Re: [sage-devel] Re: nondescript tracebacks with load and attach

2011-05-21 Thread Willem Jan Palenstijn
On Fri, May 20, 2011 at 10:40:58PM -0700, Simon King wrote: > Hi Marco, > > could you please provide more information about your system? > > Namely, originally I had only tested that your example works fine if I > use sage-4.7.rc2 plus trac ticket #9976. But now, I tested again with > plain unpat

[sage-devel] Re: matrix multiplication over ZZ sometimes gives incorrect results

2011-05-21 Thread Tom Coates
On May 21, 8:55 am, Maarten Derickx wrote: > Good you found this. I already noticed that the modular symbols code > some times gave me a different awnser then before, but I couldn't > reproduce this so I guess this is the underlying reason. That is very plausible: it also causes occasional and

[sage-devel] Re: Proving 1 equals 0 shouldn't be possible

2011-05-21 Thread kcrisman
By the way, this is a great way to introduce students to how computers do exactly what we tell them, and no more! There are similar good examples with trying to do floating point limits, or complicated integrals that have a 'trick' (though these are getting harder to find). - kcrisman -- To pos

[sage-devel] Re: Proving 1 equals 0 shouldn't be possible

2011-05-21 Thread kcrisman
On May 21, 5:35 am, Juanlu001 wrote: > Yesterday I was playing with symbolic expressions, and I had to apply > divide_both_sides(), and I encountered something funny: you can divide > by zero (with a bit of care). To show this, I've taken the classic > "proof" and created a worksheet: > > http:/

[sage-devel] Proving 1 equals 0 shouldn't be possible

2011-05-21 Thread Juanlu001
Yesterday I was playing with symbolic expressions, and I had to apply divide_both_sides(), and I encountered something funny: you can divide by zero (with a bit of care). To show this, I've taken the classic "proof" and created a worksheet: http://flask.sagenb.org/home/pub/65/ Though I have got u

[sage-devel] Re: matrix multiplication over ZZ sometimes gives incorrect results

2011-05-21 Thread Maarten Derickx
Good you found this. I already noticed that the modular symbols code some times gave me a different awnser then before, but I couldn't reproduce this so I guess this is the underlying reason. I will look at it if I have the time. Kind regards, Maarten Derickx On May 20, 3:56 pm, Tom Coates wrote