Hi, I didn't implement subs for these types, but it seems to be inheriting from some generic code. The description of output says that self is returned if the substitution fails, which is the behavior you observe.
This could be fixed by defining subs for a FreeAlgebraElement, but the logic of the generic function should be reported as a bug. --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/ -~----------~----~----~----~------~----~------~--~---
