> > ex.is_zero(simplify=False) > ex.is_zero(simplify=True)
This fits if ex is an equality. But what about: if x>0 ? Two functions are necessary for inequalities because (x>0).__nonzero__ is called by (x>0)._cmp_ in case of eg. uniq(list of exes) and here print or alphabetical order is called for, not proof. So there is still a need for hold/truth() etc it seems. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.