I have no idea whether the following is to be expected: sage: P = PolynomialRing(GF(2), "z", sparse=False); Q = PolynomialRing(ZZ, "z") sage: P.has_coerce_map_from(Q) True
sage: P = PolynomialRing(GF(2), "z", sparse=True); Q = PolynomialRing(ZZ, "z") sage: P.has_coerce_map_from(Q) False Martin -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/c585103b-9dfa-4e25-b36b-20f8fb937435n%40googlegroups.com.
