On Fri, Jun 15, 2012 at 1:18 PM, Gato <gato....@gmail.com> wrote: > help me please: > > > sage: F.<w>=GF(4,'w') > sage: R.<X,Y,Z> = ProjectiveSpace(F,2) > sage: C = Curve(X^2*Y + w*Y^2*Z+ w^2*Z^2*X) > sage: print C > Projective Curve over Finite Field in w of size 2^2 defined by X^2*Y + > (w)*Y^2*Z + (w + 1)*X*Z^2 > sage: print C.genus() > 1 > sage: pts = C.rational_points() > sage: print pts[4] > (1 : w : 1) > sage: print pts[5] > (w : 1 : 1) > sage: D = C.divisor([ (2, pts[4]),(1, pts[5]) ]) > sage: print C.riemann_roch_basis(D) > --------------------------------------------------------------------------- > AttributeError Traceback (most recent call last) > > /home/valpo/Descargas/sage-4.8/<ipython console> in <module>() > > /home/valpo/Descargas/sage-4.8/local/lib/python2.6/site-packages/sage/structure/parent.so > in sage.structure.parent.Parent.__getattr__ (sage/structure/parent.c:6249)() > > AttributeError: 'ProjectiveCurve_finite_field' object has no attribute > 'riemann_roch_basis' > > > why??
I think this means that the class ProjectiveCurve_finite_field does not have the method riemann_roch_basis implemented. See http://www.sagemath.org/doc/constructions/algebraic_geometry.html for examples. > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
