[sage-devel] Re: Sage and Singular Talk

2009-08-03 Thread Rado
The problem is that there is a place of degree 6 at position 0 (or 1 in Singular world). I think Singular used the places listed at C[3] for RR computations (if i am reading http://www.singular.uni-kl.de/Manual/latest/sing_1341.htm#SEC1418 correctly) and not C[1][5]-Points (which is random and

[sage-devel] Re: Sage and Singular Talk

2009-08-03 Thread Rado
oh and forgot to mention, because of the way sage tries (and fails since Singular is very uncooperative) to map the points it knowns to points in Singular, the example above becomes (10,0,0,-1,0,3) (which again might change a sometimes since this depends on C[1][5]-POINTS). Now mapping this

[sage-devel] Re: Sage and Singular Talk

2009-07-18 Thread William Stein
On Fri, Jul 17, 2009 at 6:35 AM, David Joynerwdjoy...@gmail.com wrote: On Fri, Jul 17, 2009 at 9:13 AM, David Joynerwdjoy...@gmail.com wrote: On Thu, Jul 16, 2009 at 5:19 AM, Martin Albrechtm...@informatik.uni-bremen.de wrote: On Thursday 16 July 2009, David Joyner wrote: On Wed, Jul 15,

[sage-devel] Re: Sage and Singular Talk

2009-07-17 Thread David Joyner
On Thu, Jul 16, 2009 at 5:19 AM, Martin Albrechtm...@informatik.uni-bremen.de wrote: On Thursday 16 July 2009, David Joyner wrote: On Wed, Jul 15, 2009 at 7:31 PM, Kiran Kedlayaksk...@gmail.com wrote: One pet complaint that you might bring up with the Singular team: I Speaking of pet

[sage-devel] Re: Sage and Singular Talk

2009-07-17 Thread David Joyner
On Fri, Jul 17, 2009 at 9:13 AM, David Joynerwdjoy...@gmail.com wrote: On Thu, Jul 16, 2009 at 5:19 AM, Martin Albrechtm...@informatik.uni-bremen.de wrote: On Thursday 16 July 2009, David Joyner wrote: On Wed, Jul 15, 2009 at 7:31 PM, Kiran Kedlayaksk...@gmail.com wrote: One pet complaint

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread ederc
Nice talk Martin, have a good time in K-town next week, sorry that I can't be there. On Jul 16, 1:43 am, David Joyner wdjoy...@gmail.com wrote: On Wed, Jul 15, 2009 at 7:31 PM, Kiran Kedlayaksk...@gmail.com wrote: One pet complaint that you might bring up with the Singular team: I

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread Martin Albrecht
On Thursday 16 July 2009, David Joyner wrote: On Wed, Jul 15, 2009 at 7:31 PM, Kiran Kedlayaksk...@gmail.com wrote: One pet complaint that you might bring up with the Singular team: I Speaking of pet complaints, can you ask if they will at some point fix the bugs in the Riemann-Roch

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread Martin Albrecht
Hi Kiran, this is now http://www.singular.uni-kl.de:8002/trac/ticket/154 Cheers, Martin On Thursday 16 July 2009, Kiran Kedlaya wrote: One pet complaint that you might bring up with the Singular team: I have had trouble using Singular for Groebner basis computations over the rational

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread john_perry_usm
Martin, page 29 has PolyBoRi is not use inexplicitly: Should it be is not used explicitly or is used implicitly or is used explicitly? page 57 has at least 10 \times -20 \times: 10--20x (not in math mode) might be more readable; right now it looks like negative 20 times page 57 has M4RI it

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread Martin Albrecht
Hi John, page 29 has PolyBoRi is not use inexplicitly: Should it be is not used explicitly or is used implicitly or is used explicitly? I mean to say that PolyBoRi is not used 'behind the scenes' when it is not explicit requested. page 57 has at least 10 \times -20 \times: 10--20x (not in

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread William Stein
On Thu, Jul 16, 2009 at 3:51 PM, Martin Albrechtm...@informatik.uni-bremen.de wrote: Hi John, page 29 has PolyBoRi is not use inexplicitly: Should it be is not used explicitly or is used implicitly or is used explicitly? I mean to say that PolyBoRi is not used 'behind the scenes' when it

[sage-devel] Re: Sage and Singular Talk

2009-07-16 Thread Martin Albrecht
On Thursday 16 July 2009, William Stein wrote: On Thu, Jul 16, 2009 at 3:51 PM, Martin Albrechtm...@informatik.uni-bremen.de wrote: Hi John, page 29 has PolyBoRi is not use inexplicitly: Should it be is not used explicitly or is used implicitly or is used explicitly? I mean to say

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread David Joyner
Looks great as usual. I noticed a mis-spelling on page 46 (search for April in your latex file and you'll find it). On Wed, Jul 15, 2009 at 7:25 AM, Martin Albrechtm...@informatik.uni-bremen.de wrote: Hi there, next week I'll visit the Singular group in Kaiserslautern. As a part of my visit

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Simon King
Hi Martin, On 15 Jul., 13:25, Martin Albrecht m...@informatik.uni-bremen.de wrote: I have uploaded a draft of my slides to:  http://sage.math.washington.edu/home/malb/talks/sage-singular.pdf Page 8: Is there really a script sage -spkg? What is it used for? I only know sage -pkg. It is good

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Martin Albrecht
On Wednesday 15 July 2009, Simon King wrote: Hi Martin, On 15 Jul., 13:25, Martin Albrecht m...@informatik.uni-bremen.de wrote: I have uploaded a draft of my slides to: http://sage.math.washington.edu/home/malb/talks/sage-singular.pdf Page 8: Is there really a script sage -spkg?

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Jason Grout
Martin Albrecht wrote: On Wednesday 15 July 2009, Simon King wrote: Hi Martin, On 15 Jul., 13:25, Martin Albrecht m...@informatik.uni-bremen.de wrote: I have uploaded a draft of my slides to: http://sage.math.washington.edu/home/malb/talks/sage-singular.pdf Page 8: Is there really a

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Marshall Hampton
On page 28, imature should be immature. On page 46, montsh should be months. On page 47, test should be tests. On page 48, plattforms should be platforms. Cheers, Marshall On Jul 15, 5:25 am, Martin Albrecht m...@informatik.uni-bremen.de wrote: Hi there, next week I'll visit the Singular

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Michael Brickenstein
Hi Martin! This is an example for open culture, to discuss talks in advance in public mailing lists :-). It would become more emotionally, if you use the heart of mathematics for plotting. f=(2*x^2+y^2+z^2-1)^3-(1/10)*x^2*z^3-y^2*z^3 == 0 Regarding the benchmarks with polybori multiplication:

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread gsw
Hi Martin, On 15 Jul., 13:25, Martin Albrecht m...@informatik.uni-bremen.de wrote: Hi there, next week I'll visit the Singular group in Kaiserslautern. As a part of my visit I will give a talk on Sage. The talk will be focused on topics I assume to be relevant to the Singular team. I have

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread Kiran Kedlaya
One pet complaint that you might bring up with the Singular team: I have had trouble using Singular for Groebner basis computations over the rational function field Q(t). Certain computations that Magma handles easily cause Singular to choke up. I posted an example upstream:

[sage-devel] Re: Sage and Singular Talk

2009-07-15 Thread David Joyner
On Wed, Jul 15, 2009 at 7:31 PM, Kiran Kedlayaksk...@gmail.com wrote: One pet complaint that you might bring up with the Singular team: I Speaking of pet complaints, can you ask if they will at some point fix the bugs in the Riemann-Roch computations in the Brill-Noether routines? To be