Consider the following short example: http://nbviewer.ipython.org/urls/gist.githubusercontent.com/bjodah/720617780e83d7c35797/raw/c297ecf76a8e26a711b7c7868839f2dfb221bc10/gistfile1.txt
refine with Q.is_true(...) works ok for refining away Piecewise from a solution (although it's a bit picky, e.g. Eq(k**3,0) was needed instead of Eq(k, 0) for example) It fails to refine to the default though (see last row). I looked for Q.is_false without luck, I also looked for an Inequality class but found nothing. I know work on new assumptions is still in the pipeline, my example is with latest sympy in conda (0.7.5), is there away in 0.7.5 or in master to do what I am looking for? Btw. I have a hackish solution to get out only the defaults of Piecewise here <https://github.com/bjodah/symvarsub/blob/master/symvarsub/utilities.py#L124> is someone is interested. Best regards, /Björn -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/2fd9a5db-8b47-4779-9be8-c50c02a431dd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
