I traced the problem back and it reduces to this F = GF(2) L.<t> = PowerSeriesRing(F,'t') R.<x,y> = PolynomialRing(L,'x,y') PolynomialSequence([], R)
failing. The problem is that the constructor of PolynomialSequence distinguishes implicitly between fields of characteristic != 2 and finite fields of characteristic 2 (and L is neither). I think [1] should fix the problem, but I don't have a workaround at the moment. [1] https://github.com/sagemath/sage/pull/41 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
