On 2017-08-12, rjf <fate...@gmail.com> wrote: > seems to me that asking for the "sign" of b^(1/3) in the complex domain > is nonsense.
sign(c - (b*c)^(1/3)) actually was encountered when Maxima was trying to find the sign of some other expression. When domain = complex, SIGNDIFF-SPECIAL alternates between sign(c - (b*c)^(1/3)) and sign(c^3 - b*c) (which was a subexpression of the one the user was actually interested in). See my message to maxima-discuss about this. best Robert Dodier -- 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.
