I looked into it a bit and it seems to be an IML bug. Presumably 75 is some cutoff inside IML, though I haven't verified this. You get the right answer if you use a different backend to compute the kernel:
sage: matrix(QQ,A).right_kernel(algorithm='generic').dimension()+A.rank() 76 -- 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
