On Wed, Nov 25, 2009 at 6:06 PM, Gonzalo Tornaria
wrote:
> On Wed, Nov 25, 2009 at 11:04 PM, William Stein wrote:
>> Another nice addition would be to use Tachyon instead of Java by
>> default to render 3d images on the iphone. I.e.,
>>
>> I = icosahedron()
>> I.show(viewer='tachyon')
>>
>
On Wed, Nov 25, 2009 at 7:26 PM, John H Palmieri wrote:
> In ring.pyx, there is code like this:
>
> if proof:
> return NotImplementedError
> else:
> return False
>
> I would think that the second line should say "raise
> NotImplementedError". (Changing it makes
On Wed, 25 Nov 2009 at 07:26PM -0800, John H Palmieri wrote:
> In ring.pyx, there is code like this:
>
> if proof:
> return NotImplementedError
> else:
> return False
>
> I would think that the second line should say "raise
> NotImplementedError". (Changin
Hi John,
Hard to be certain without the context, but I think this is the
relevant discussion:
http://groups.google.com/group/sage-devel/browse_thread/thread/dc104b7cb64d39e3/
In short, IIRC, sometimes a construction will create a ring. In
certain instances the construction might also be a field.
In ring.pyx, there is code like this:
if proof:
return NotImplementedError
else:
return False
I would think that the second line should say "raise
NotImplementedError". (Changing it makes some doctests fail,
though.) Is there a good reason for doing "retu
On Wed, Nov 25, 2009 at 11:04 PM, William Stein wrote:
> Another nice addition would be to use Tachyon instead of Java by
> default to render 3d images on the iphone. I.e.,
>
> I = icosahedron()
> I.show(viewer='tachyon')
>
> works fine on the iphone, but it is tedious to type viewer='tachy
On Wed, Nov 25, 2009 at 2:58 PM, Michael Madison
wrote:
> Its great that Sage is already doing "Cloud" computing with sagenb. I
> recently got a Ipod Touch and found sagenb worked well on it. It
> looks like with Iphones, Touches and Androids the touch screen
> interface is part of the future.
Hi Harald!
Where can one read the survey results? I think you did not provide a
link.
On 26 Nov., 00:06, "Dr. David Kirkby" wrote:
[...]
> It might be better for the *next* survey to have two comments areas.
>
> * Confidential - shared with you and William only.
>
> * Public - someone does not c
Michael Madison wrote:
> Its great that Sage is already doing "Cloud" computing with sagenb. I
> recently got a Ipod Touch and found sagenb worked well on it. It
> looks like with Iphones, Touches and Androids the touch screen
> interface is part of the future. While IPhones and Touches are not
Harald Schilly wrote:
> There were also concerns about publishing the data. I want to share
> everything, because this is a great opportunity for everyone to read
> what others think about the project. For example, if I have a feeling
> for this or that and I read it from somebody else, it helps t
Its great that Sage is already doing "Cloud" computing with sagenb. I
recently got a Ipod Touch and found sagenb worked well on it. It
looks like with Iphones, Touches and Androids the touch screen
interface is part of the future. While IPhones and Touches are not
good for hard core development
On Nov 25, 2009, at 10:43 AM, Harald Schilly wrote:
> Hi, I've closed the survey. We have 233 submissions after 1 week.
>
> On Nov 18, 1:35 pm, Harald Schilly wrote:
>> Later on, I'll keep the form open for new submissions so that we'll
>> get continuous feedback (e.g. each month a new form).
>
>
Mitesh Patrl already nicely implemented this for the sage notebook (in
a plethora of ways). I should enable this on sagenb.org.
On 11/25/09, Dr. David Kirkby wrote:
> It would appear to me that it would be very easy for a "script kiddie" to
> write
> a a program which created huge numbers of accou
Michael Rubinstein wrote:
> Thanks for the update.
>
> I've spent the past few weeks making major improvements to lcalc.
> I plan to release this updated version in a few weeks.
>
> 1) I got rid of the deprecated header files and the unused variables
> so it compiles much cleaner.
Excellent
> 3
On Nov 25, 10:39 am, Pat LeSmithe wrote:
> An open-ended query, naive in several ways:
>
> Is it possible to generalize Cython
>
> http://www.cython.org/http://en.wikipedia.org/wiki/Cython
>
> to Cilk / Cilk++
According to Cilk's description, Cilk is simply "C" plus some extra
keywords. What you
It would appear to me that it would be very easy for a "script kiddie" to write
a a program which created huge numbers of accounts on a Sage server, perform
some CPU intensive computation on them, and bring the system to a near
standstill. This is generally known as a denial of service attack.
All of this sounds AWESOME! Looking forward to the new version.
Best,
Alex
On Wed, Nov 25, 2009 at 01:07:15PM -0500, Michael Rubinstein wrote:
>
> Thanks for the update.
>
> I've spent the past few weeks making major improvements to lcalc.
> I plan to release this updated version in a few
Craig Citro wrote:
> Hi David,
>
> First, I want to thank you for all the work you've been doing to get
> Sage to play nicely on Sun and HP-UX recently. I think that's really
> helpful, and in particular, I think some of the comments you make
> below are definitely things that will help Mike (or a
You can use any of several determinant programs in Maxima.
I don't know if the documentation is available in Sage.
There are significant differences in running time for rational forms,
sparse matrices, and maybe other options,
for which different algorithms are more or less appropriate.
RJF
--
T
Hi,
This new list of Python Warts by Fernando is interesting:
http://fperez.org/py4science/warts.html
William
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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To un
> @Simon, about the location / geographical areas: They are very
> unspecific (usa, europe+russia, eastern asia ... there are millions of
> people!), but I can delete that column if it is really a problem. The
> survey wasn't asking about the country and nowhere is this
> information...
I bet you
Hi, I've closed the survey. We have 233 submissions after 1 week.
On Nov 18, 1:35 pm, Harald Schilly wrote:
> Later on, I'll keep the form open for new submissions so that we'll
> get continuous feedback (e.g. each month a new form).
I've put a small link to a new form (cleaned list of responses
An open-ended query, naive in several ways:
Is it possible to generalize Cython
http://www.cython.org/
http://en.wikipedia.org/wiki/Cython
to Cilk / Cilk++
http://software.intel.com/en-us/articles/intel-cilk/
http://supertech.csail.mit.edu/cilk/
http://en.wikipedia.org/wiki/Cilk
http://www.cilk
Hi David,
First, I want to thank you for all the work you've been doing to get
Sage to play nicely on Sun and HP-UX recently. I think that's really
helpful, and in particular, I think some of the comments you make
below are definitely things that will help Mike (or anyone else) make
lcalc better.
Thanks for the update.
I've spent the past few weeks making major improvements to lcalc.
I plan to release this updated version in a few weeks.
1) I got rid of the deprecated header files and the unused variables
so it compiles much cleaner.
2) I got lcalc to compile and run with Bailey's doubl
On Wed, Nov 25, 2009 at 8:24 AM, Dr. David Kirkby
wrote:
> Pablo De Napoli wrote:
>> It would be really nice if we can include the new weapper for the lcalc
>> library.
>>
>> http://trac.sagemath.org/sage_trac/ticket/5396
>>
>> [marked ad "with patch, neeeds review"]
>>
>> Pablo
>
> I have been le
> They all respect ctrl-backspace as deleting a word.
That's true and I'm also not happy with that. I looked up mma7 manual
what they have and their choice is better imho:
ctrl-shift-m for "merge" and ctrl-shift-d for "divide" - i'm also
happy with ctrl-shift-s for "split" (or both as alias)
H
-
Sebastian Pancratz wrote :
> The problem is here:
>
>
> http://trac.sagemath.org/sage_trac/attachment/ticket/6441/trac_6441_b_df_charpoly_412rebase.patch
> new lines 1084--1089
>
> When I wrote the code for computing characteristic polynomials in a
> division-free way in order for it to wo
Pablo De Napoli wrote:
> It would be really nice if we can include the new weapper for the lcalc
> library.
>
> http://trac.sagemath.org/sage_trac/ticket/5396
>
> [marked ad "with patch, neeeds review"]
>
> Pablo
I have been less than impressed with lcalc itself. Of all the packages I have
met
On Wed, Nov 25, 2009 at 7:34 AM, Florent Hivert
wrote:
> Hi Michel,
>
>> On Nov 25, 1:15 pm, Michel wrote:
>> > Too bad. I really need those determinants. Will
>> >
>> > sage -upgrade
>> >
>> > magically put things right for me?
>>
>> Probably. I can confirm that in 4.2.1 the problem does no
Hi Michel,
> On Nov 25, 1:15 pm, Michel wrote:
> > Too bad. I really need those determinants. Will
> >
> > sage -upgrade
> >
> > magically put things right for me?
>
> Probably. I can confirm that in 4.2.1 the problem does not occur.
>
> > I feel hesitant to spend another day compiling sa
It would be really nice if we can include the new weapper for the lcalc
library.
http://trac.sagemath.org/sage_trac/ticket/5396
[marked ad "with patch, neeeds review"]
Pablo
On Sun, Nov 22, 2009 at 2:53 AM, Mike Hansen wrote:
> Hello all,
>
> Sage 4.3.alpha0 is out! Sage 4.3 now contains muc
Mark Watkins wrote:
> Regarding:
> http://trac.sagemath.org/sage_trac/ticket/7066
>
> SYMPOW used to do 'which cc' to find the compiler, but then there were
> complaints that this was not portable. So now Configure (my version) just
> has CC=cc. I'm not even quite sure what the SAGE build is actu
Hello !!
I have some invitations for Wave left... If you are interested, leave
your email here !
Nathann
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The one I was looking at while writing Sorry ;-)
http://www.amazon.fr/Combinatorial-Optimization-Alexander-Schrijver/dp/3540443894
Combinatorial Optimization: Polyhedra and Efficiency (Alexander
Schrijver)
Nathann
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On Wed, Nov 25, 2009 at 8:08 AM, Nathann Cohen wrote:
> This series of 3 books probably contains everything of the graph
> theory available in Sage for the moment. It also certainly contains
I guess I'm missing something. What series of 3 books?
> things that I would like to implement in the f
Hi Michel!
On Nov 25, 1:15 pm, Michel wrote:
> Too bad. I really need those determinants. Will
>
> sage -upgrade
>
> magically put things right for me?
Probably. I can confirm that in 4.2.1 the problem does not occur.
> I feel hesitant to spend another day compiling sage.
An upgrade should be
Too bad. I really need those determinants. Will
sage -upgrade
magically put things right for me?
I feel hesitant to spend another day compiling sage.
On Nov 25, 1:14 pm, Florent Hivert
wrote:
> > [...]
>
> > > This looks like an after-effect of ticket #6441. Sebastian Pancratz
> > > wrote some
This series of 3 books probably contains everything of the graph
theory available in Sage for the moment. It also certainly contains
things that I would like to implement in the future like matroids, as
they are used to prove a good share of the theorems presented.
Concerning the LP-related patche
Actually, this is related to stuff I need to learn for some summer
research I hope to get next summer. Can you give some references
which I can read which have the background on the algorithms
you implement? For example, a book on algorithmic graph theory?
I didn't see references cited in the patch
> [...]
>
> > This looks like an after-effect of ticket #6441. Sebastian Pancratz
> > wrote some very fast code to compute determinants over general
> > commutative rings, which proceeds by computing the characteristic
> > polynomial first. When doing this for symbolic matrices it needs to
> > cho
[...]
> This looks like an after-effect of ticket #6441. Sebastian Pancratz
> wrote some very fast code to compute determinants over general
> commutative rings, which proceeds by computing the characteristic
> polynomial first. When doing this for symbolic matrices it needs to
> choose a variable
The problem is here:
http://trac.sagemath.org/sage_trac/attachment/ticket/6441/trac_6441_b_df_charpoly_412rebase.patch
new lines 1084--1089
When I wrote the code for computing characteristic polynomials in a
division-free way in order for it to work over more general base
rings, it turne
This was on a freshly compiled Sage 4.2. I did not do anything
else in this session.
On Nov 25, 1:03 pm, Florent Hivert
wrote:
> On Wed, Nov 25, 2009 at 03:20:38AM -0800, Michel wrote:
> > --
> > | Sage Version 4.2, Release Date:
On Nov 25, 8:20 pm, Michel wrote:
> --
> | Sage Version 4.2, Release Date: 2009-10-24 |
> | Type notebook() for the GUI, and license() for information. |
> -
On Wed, Nov 25, 2009 at 03:20:38AM -0800, Michel wrote:
> --
> | Sage Version 4.2, Release Date: 2009-10-24 |
> | Type notebook() for the GUI, and license() for information.|
> --
On Wed, 25 Nov 2009 at 03:20AM -0800, Michel wrote:
> sage: expand(_)
> -a*b*c*d*t^3 + a^2*c^2*t^2 + a*b*t^3*e - 2*a*c*f*t^2*e - a*d*f*t^3 +
> b^2*d^2*t^2 + b*c*f*t^3 + 2*b*d*f*t^2*e - c*d*t^3*e +
> A0123456789^2*a^2*t + 2*A0123456789*a^2*t^2 + a^2*t^3 - a*b*c*d*t -
> 2*a*b*t^2*e + 2*a*d*f*t^2 + b^
--
| Sage Version 4.2, Release Date: 2009-10-24 |
| Type notebook() for the GUI, and license() for information.|
--
sage: var("t a
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