On Jun 12, 1:17 am, John Cremona <john.crem...@gmail.com> wrote: > I think there's a case for having a more basic class for holding > "things with multiplicities"; the the spectrum could be one of these > (or a class derived from it) and Factorization would also be a derived > class.
Hi John, Yes, I agree. There's a lot of the Factorization class oriented to integers, or primes, such as gcd() and value() methods. But the functionality for tracking and representing "things" with multiplicities would be useful in other contexts. For a superclass of a Spectrum object I'd be interested in "things" that are sortable, and such that if they are repeated, then they can be safely grouped together without any change in meaning. Much of such a hypothetical superclass could probably be employed in the Factorization class. For multisets, as Nicolas suggests, the order would no longer be important. It seems like the defaultdict() data type from the Python collections module could provide much of this functionality. Rob --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
