On Sat, 24 Nov 2018 at 19:25, john_perry_usm <john.pe...@usm.edu> wrote:
> I walk into this discussion with some hesitancy, but Christian Eder has > developed a rather efficient F4 algorithm. [1] I know it works and is quite > fast, though I haven't compared it to the implementations mentioned above. > Unfortunately, I haven't heard from him in a while after he went off to > Iran for a few weeks, and he doesn't seem to have updated his site since > then, either. > https://github.com/ederc/ederc.github.io was updated 5 days ago, so he must be just busy... > Is integrating Eder's project something a group might be interested in > doing at [2]? I had planned to apply to work on integrating a similar > project at [2] (a different sort of F4-style Gröbner basis algorithm [3,4]) > but perhaps [1] would be a good bet since there's no doubt about it and > Eder spent at least a year in Paris working with Faugère. > > regards > john perry > > [1] https://github.com/ederc/gb > > [2] https://www.ima.umn.edu/2018-2019/SW7.22-26.19 > > [3] https://github.com/johnperry-math/DynGB > > [4] https://dl.acm.org/citation.cfm?id=3087643 > > On Wednesday, November 21, 2018 at 4:43:01 PM UTC-6, Markus Wageringel > wrote: >> >> Hi everyone. >> >> I created a Sage wrapper for the C interface of FGb, which makes it easy >> to call FGb from within Sage. The sources are available on Github [1] and >> can be installed as a Python package into Sage: >> >> [1] https://github.com/mwageringel/fgb_sage >> >> >> FGb is a C-library by J. C. Faugère for computing Gröbner bases and >> supposedly it is one of the faster implementations that exist. It is >> included with Maple [2]. FGb is closed source, but comes with a C interface >> that is freely distributed for academic use. Some of the features: >> >> • The computations run in parallel. (This only seems to work for >> computations over finite fields.) >> • Elimination/block orders are supported. >> • It runs on Linux and Mac. (There seem to be some issues, though. I >> could not get FGb to work on my Ubuntu machine. It fails with an "Illegal >> instruction" error.) >> >> >> In my Sage interface, I implemented just two functions: computing Gröbner >> bases and elimination ideals. Supposedly, the FGb C-library supports other >> functionality like computing Hilbert polynomials, but that part of the >> library is not documented very well, so it does not make sense to try to >> create wrappers for that. The focus is finding a Gröbner basis which, once >> computed, can be used by Sage for further computations. >> >> I just wanted to share this. Maybe it is useful for someone. >> >> Markus >> >> [2] https://www-polsys.lip6.fr/~jcf/FGb/Maple/index.html >> >> -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
