Hi, There seems to be a quite strange behaviour of _richcmp in structure.element.pyx. If the parents need to be coerced, afterwards left._richcmp_ is called. But if they don't, left.__cmp__ is called, hence assuming a totally ordered parent. I don't see any reason for such a behaviour and it renders correct and easy implementations of partially ordered parents almost impossible. Shouldn't this be revised? I might do it.
Best regards, Martin Raum --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
