The second option sounds better to me. In any case, it would be very helpful if the error message would explain how to do it correctly, for example:
WARNING: The given argument 'z' is a symbolic expression; this is not the same as a generator of Univariate Polynomial Ring in z over Rational Field. Are you trying to say "R.<z>=QQ[]"? -- 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
