> > Out of curiosity, I decided to ask sage what it thought the imaginary part > of infinity was. I'm not quite sure that this should return 0. > Mathematica returns Indeterminate, which seems like a better answer to me. > It is strange that infinity can apparently be converted into a complex number. This is related to the following questionable behaviour:
sage: Infinity in RR True This arises because the internal representation of floating-point numbers allows (+/-)Infinity as special values. On the other hand: sage: Infinity in CC False sage: RR.is_subring(CC) Traceback (most recent call last): ... NotImplementedError -- 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/groups/opt_out.
