libsingular interface is a mess, cf e.g. https://trac.sagemath.org/ticket/27508
On Sun, 16 Jun 2019 12:54 Markus Wageringel, <markus.wagerin...@gmail.com> wrote: > If I understand the documentation correctly, both cases should call the > same Singular function (`groebner` in this case), with the only difference > that one is called through the C interface and the other via the Pexpect > interface. When I enable the protocol by passing `prot=True`, I get the > exact same output, except that one prints faster than the other, which > suggests that in both cases the same computation is run by Singular. > > Actually, I was planning to add an option to Sage for calling the Singular > function `modStd` for the modular approach you mention, when I found this > speed difference. None of the current options in Sage seem to allow to make > use of modular computations, except when using Giac. > > > Am Samstag, 15. Juni 2019 21:34:03 UTC+2 schrieb Bill Hart: >> >> I would guess that `libsingular' is the C++ kernel of Singular which does >> not implement all strategies for GB's over Q. There are additional >> strategies implemented both in Singular library code and in the Singular >> interpreter. Presumably the `singular' interface is using the interpreter, >> if not a Singular library, which makes use of more advanced strategies. In >> particular there is a library for a modular approach. >> > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/9c034d11-15e0-4ae1-a689-751e039285be%40googlegroups.com > <https://groups.google.com/d/msgid/sage-devel/9c034d11-15e0-4ae1-a689-751e039285be%40googlegroups.com?utm_medium=email&utm_source=footer> > . > 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. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CAAWYfq0cxEmLVb79cfx7u7_MGCLKKc7SX%3DDJ1mm2Aev23O1aKg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
