This is probably related to the following: sage: var('z') z sage: (z - 4*z.conjugate()).simplify() -3*z
which is a bug, given that the documentation of var says: By default, var returns a complex variable Eric. -- 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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.