The following looks ok (see comments below, however): sage: 1/RR(0) +infinity sage: RR(0)^(-1) +infinity
But how about this? sage: 1/CC(0) NaN - NaN*I sage: CC(0)^(-1) ZeroDivisionError... I don't really like either of these; I guess I would prefer the answer to be UnsignedInfinity in both cases. For that matter, I'm not quite sure why 1/RR(0) is +infinity rather than -infinity, so I guess I would prefer for *that* to be UnsignedInfinity as well. On the other hand, I don't really use this sort of thing every day, so maybe someone who's closer to this issue can chime in. Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
