The semantics of substitution as done in Maxima and probably Ginac (no wildcards) is quite clear IF you understand the representation of expressions as trees. Not strings.
That means that some people will NOT understand substitution. A fairly safe bet is only to substitute for atoms. -- 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
