On Friday 18 May 2007 12:06, Michel wrote: > As far as I know singular does not have gcd for multivariate > polynomials over numberfields > (Martin: is this true?)
The SINGULAR source states that they only support GCDs over: Q, Fp, Fp(a), and Q(a). I am not exactly sure what is meant by the latter but I assume its a one dimensional algebraic extension of QQ. > but it seems pari does. Is there a reason why this functionality is > not exported to sage (or is it)? Probably because no one got around writing this code yet. > I tried gp.gcd but I don't understand what it is supposed to do. It > seems to be undocumented (I did not look in the source yet). You just witnessed the true power of SAGE :-). Every gp function is available in SAGE through the expect interface. That is, if you know the pari code for a gcd over number fields you can use than in SAGE. Still, this should be a convenient method of the appropriate class. Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
