On Wed, Aug 18, 2010 at 4:18 AM, David Kirkby <david.kir...@onetel.net> wrote: > On 18 August 2010 11:33, John Cremona <john.crem...@gmail.com> wrote: >> On 17 August 2010 23:31, William Stein <wst...@gmail.com> wrote: > >>>>> It would be a student project to reimplement Mark W's algorithm (Here: >>>>> http://www.emis.ams.org/journals/EM/expmath/volumes/11/11.4/pp487_502.pdf) >>> > > >>> This is what should happen. After somebody implements his algor >>> in Sage, then >>> we can (re)move Sympow. Here's a trac ticket: >>> >>> http://trac.sagemath.org/sage_trac/ticket/9758 >>> > > It would be good to state on the ticket what level of student project > this is (undergrad, postgrad), and the skill set needed (C, Python > etc). I expect you would prefer it in Python, though I think > personally a C implementation like Marks, which you can easily call > from Python, would be more beneficial to the scientific community in > general - not everyone is using Sage/Python. > > I know if I were a student, I'd prefer a bit more information on that > trac ticket.
Good idea -- I've posted some stuff there. > Is there a Sage web page where potential student projects could be > listed? A student is unlikely to find it on a trac ticket? I believe > some Sage projects have been done in collaboration with other > universities - IIRC, there was student at a uni in London who did a > Sage related project. I think every open ticket on trac (all >2000 of them) has the potential to be a student project. However, during the last year when I've told prospective students: "try to find a trac ticket to work on" they almost always disappear and never return. So something more organized would be of value. However, who has the time... > > I'm basically trying to see how you could maximise the chances of > getting a student to take it on. SYMPOW is the *only* significant > barrier to Sage passing all tests on 32-bit Solaris x86 and > OpenSolaris - the others are numerical noise. But I'm reluctant to > even look at SYMPOW. > >> Excellent. Delaunay replied to me saying that he was away from home >> but when he returns he will try to locate his own implementation, >> which is in a GP script. That might well help the implementer. Also, >> in one of his replies on this discussion (not copied to the list so I >> hope he will not mind me quoting hime here, Mark says >> >> "My understanding was that Christophe had more details about the analytic >> questions (like inverse Mellin transforms and round-off error -- neither >> referee insisted that I say anything there), while I spent more time with >> the bad Euler factors (having tracked down the Coates-Schmidt paper where >> they essentially appear, though with a few accounting errors, and with a >> method of computation not explicitly given). I also took an "experimental" >> view of the question, computing the modular degree for a large dataset of >> curves, whilst his focus was more "French" (if I may), in that it gives a >> theoretical description and then (almost grudgingly) appends a few examples." >> >> This difference of emphasis is significant. Mark wanted to collect a >> lot of data, so wanted his program to be fast, while Christophe just >> wanted some examples to show that the method was feasible. Hie script >> may still be useful though. >> >> John > > Again, that could usefully be added on the trac ticket. > >> >>> I wish Robert Bradshaw would finish >>> http://trac.sagemath.org/sage_trac/ticket/9193, by the way. > >>> William > > Dave > > -- > 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 options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- 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 options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
