PS: > sage: cm.explain(QQ, b.parent())
I forgot to copy-and-paste the definition of "cm". It was: sage: from sage.structure.element import get_coercion_model sage: cm = get_coercion_model() Cheers, Simon -- 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
