On Friday 05 September 2008, phil wrote: > R.<x,y> = QQ[] > C = random_matrix(R,10,10) > Cdet = C.determinant()
Here's a workaround: sage: R.<x,y> = QQ[] sage: C = random_matrix(R,8,8) sage: %time d = C.determinant() CPU times: user 2.64 s, sys: 0.00 s, total: 2.65 s Wall time: 2.67 s sage: %time d2 = R(C._singular_().det()) CPU times: user 0.04 s, sys: 0.01 s, total: 0.05 s Wall time: 0.15 s sage: d2 == d True So we need to call Singular instead of using the native code. This is now http://trac.sagemath.org/sage_trac/ticket/4068 Cheers, 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 [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
