Hi Alasdair! What about this:
sage: F.<x>=GF(2^8,name='x') sage: R.<y>=PolynomialRing(GF(2)) sage: p = F.random_element() sage: p x^7 + x^5 + x^4 + x sage: pp = p.polynomial() sage: pp(x=y) y^7 + y^5 + y^4 + y The only difference to your approach is that R is defined over the field GF(2) rather than the ring Zmod(2). sage: GF(2)==Zmod(2) False Cheers, Simon -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
