On Wed, May 04, 2016 at 01:54:04PM +0200, Thierry wrote:
> Hi,
>
> On Wed, May 04, 2016 at 03:05:03AM -0700, mmarco wrote:
> > Also, has somebody done timing comparisons with singular?
>
> According to the following ask question, it is much slower at least on a
> given concrete example
> http://a
On Monday, May 9, 2016 at 4:03:49 AM UTC-5, parisse wrote:
>
>
> Le lundi 9 mai 2016 09:18:53 UTC+2, john_perry_usm a écrit :
>>
>>
>> For the homogeneous cyclic-8,
>>
>> > int RT = rtimer; int T=timer; size(sba(k,0,0)); rtimer-RT; timer-T;
>> 1182
>> 6854
>> 5113
>>
>>
> Strange figures: I get 4
Le lundi 9 mai 2016 09:18:53 UTC+2, john_perry_usm a écrit :
>
>
> For the homogeneous cyclic-8,
>
> > int RT = rtimer; int T=timer; size(sba(k,0,0)); rtimer-RT; timer-T;
> 1182
> 6854
> 5113
>
>
Strange figures: I get 455 for the first (which is correct for the basis
size, while 1182 is wrong)
Changing the rewrite order greatly improves performance (though not yet to
an acceptable level). I tested this using Singular's web-interface. For the
inhomogeneous cyclic-8,
> int RT = rtimer; int T=timer; size(sba(k,0,0)); rtimer-RT; timer-T;
372
6369
5304
For the homogeneous cyclic-8,
> in
Le dimanche 8 mai 2016 04:08:54 UTC+2, john_perry_usm a écrit :
>
> What about homogeneous cyclic-8? I'm not sure it will be any better; I'm
> just curious.
>
> I do know Singular is working on improving aspects of the sba()
> implementation, and I'm a bit surprised it's that slow.
>
That's i
What about homogeneous cyclic-8? I'm not sure it will be any better; I'm
just curious.
I do know Singular is working on improving aspects of the sba()
implementation, and I'm a bit surprised it's that slow.
On Saturday, May 7, 2016 at 1:32:36 AM UTC-5, parisse wrote:
>
>
>
> Le samedi 7 mai 201
Le samedi 7 mai 2016 07:30:42 UTC+2, john_perry_usm a écrit :
>
> I'm sorry. I got the name mixed up; the function you want to look at is
> sba(), not dstd() (which is something experimental of mine that never saw
> the light of day).
>
> http://www.singular.uni-kl.de/Manual/latest/sing_39
I'm sorry. I got the name mixed up; the function you want to look at is
sba(), not dstd() (which is something experimental of mine that never saw
the light of day).
http://www.singular.uni-kl.de/Manual/latest/sing_391.htm#SEC430
Because my copy of Singular is a little... "tinkered with" I'
Le vendredi 6 mai 2016 15:07:48 UTC+2, john_perry_usm a écrit :
>
>
> One of us misunderstands the other. Here's what I'm saying:
>
>- Singular's std() is neither an F4- nor F5-style algorithm; it is a
>traditional, Buchberger algorithm that uses a modified Gebauer-Möller pair
>sele
On Wednesday, May 4, 2016 at 11:58:13 PM UTC-5, parisse wrote:
> Le mercredi 4 mai 2016 23:00:23 UTC+2, john_perry_usm a écrit :
>>
>> Unfortunately Roman doesn't mention on that page whether he used
>> Singular's std() or dstd(). The numbers look vaguely std()ish to me (i.e.,
>> when I compute
Le mercredi 4 mai 2016 23:00:23 UTC+2, john_perry_usm a écrit :
>
>
> Unfortunately Roman doesn't mention on that page whether he used
> Singular's std() or dstd(). The numbers look vaguely std()ish to me (i.e.,
> when I compute the GB of Cyclic-8 using std(), it takes about 40 seconds;
> homo
On Wed, May 4, 2016 at 5:17 PM, Luca De Feo wrote:
>> Can you also ask him about the license?
>
>
> You can read here http://www-polsys.lip6.fr/~jcf/FGb/Maple/tutorial-fgb.pdf
> that "FGb is freely distributed for academic use only". The question has
> been asked often: publishing the sources is o
>
> Can you also ask him about the license?
>
You can read here http://www-polsys.lip6.fr/~jcf/FGb/Maple/tutorial-fgb.pdf
that "FGb is freely distributed for academic use only". The question has
been asked often: publishing the sources is out of question.
--
Luca
--
You received this message
On Wednesday, May 4, 2016 at 3:14:16 PM UTC-5, parisse wrote:
>
>
> Perhaps you should have a look at the link I've posted, there is a
> comparison of mgb with magma, singular and my own system giac (for which
> there is an optional package in sage), mgb is not open source while
> singular and g
Le mercredi 4 mai 2016 12:05:04 UTC+2, mmarco a écrit :
>
> Can you also ask him about the license?
>
> Also, has somebody done timing comparisons with singular?
>
>
Perhaps you should have a look at the link I've posted, there is a
comparison of mgb with magma, singular and my own system giac
Hi,
On Wed, May 04, 2016 at 03:05:03AM -0700, mmarco wrote:
> Also, has somebody done timing comparisons with singular?
According to the following ask question, it is much slower at least on a
given concrete example
http://ask.sagemath.org/question/32742/elimination-of-variables-in-polynomial-equ
Can you also ask him about the license?
Also, has somebody done timing comparisons with singular?
El miércoles, 4 de mayo de 2016, 10:25:42 (UTC+2), Luca De Feo escribió:
>
> I was also thinking about writing an interface to FGb. Maple uses this
> library via the C API to compute Gröbner bases.
Le mercredi 4 mai 2016 10:25:42 UTC+2, Luca De Feo a écrit :
>
> I was also thinking about writing an interface to FGb. Maple uses this
> library via the C API to compute Gröbner bases. As far as I know Magma uses
> an older version of this code too. So it must be doable.
>
>
>
Maple will pro
I was also thinking about writing an interface to FGb. Maple uses this
library via the C API to compute Gröbner bases. As far as I know Magma uses
an older version of this code too. So it must be doable.
I spoke to the author, and he is positive about an interface into Sage. If
we find ourselve
I have been using FGb for the past 3 months. It supports Grobner basis
computation over a prime finite field and rational field. I personally only
use it for system of equations over a finite field. Some details I would
like to share here :
1. The choice to perform computation over finite field
Have you noticed that it's binary only? So you cannot include it.
Provide an interface, well, yes.
On Tuesday, May 3, 2016 at 8:39:37 PM UTC+1, Travis Scrimshaw wrote:
>
> Hey all,
>I justed wanted to point out that I found this Gröbner basis package:
> http://www-polsys.lip6.fr/~jcf/FGb/inde
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