I discussed the following issue with <logix> @IRC:
sage: rank(matrix(2,[1.5,1.75,-1.5,-1.75])) 2 gives a wrong answer. Multiplying with a full rank matrix also gives unexpected results: sage: rank( matrix(2,2,[1,0,0,1]) * matrix(2,[1.5,1.75,-1.5,-1.75]) ) 2 sage: rank( matrix(2,2,[1,0,1,1]) * matrix(2,[1.5,1.75,-1.5,-1.75]) ) 1 And even more serious: multiplying with another rank one matrix: sage: rank( matrix(2,2,[1,0,1,0]) * matrix(2,[1.5,1.75,-1.5,-1.75]) ) 2 I think this is something that should be fixed. -vgermrk- -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
