is currently rather awkward:
sage: M = MatrixSpace(QQ, 2) sage: L.<x> = PolynomialRing(M) sage: 1-x ([-1 0] [ 0 -1])*x + [1 0] [0 1] Is there a cure? -- 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/04e8ee38-da6a-4a5a-8251-553a23df06fen%40googlegroups.com.
