Hi folks (especially william + robert + david roe), I showed up for Doc Days 1 and started looking at the infinity and extended integer ring stuff.
Question: why does the "unsigned infinity ring" not have a zero element, whereas the "(signed) infinity ring" has a zero? This is okay: sage: 0 / Infinity Zero But this is way confusing: sage: oo = UnsignedInfinityRing(Infinity) sage: 0 / oo A number less than infinity I totally expected the last output to be Zero. But it can't be, because the UnsignedInfinityRing doesn't have a zero element. On the other hand, if there's a zero element, then you start having issues with things like sage: UnsignedInfinityRing(2) - UnsignedInfinityRing(3) because you can't tell if it's zero or not. Thoughts? david --~--~---------~--~----~------------~-------~--~----~ 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://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
