On Thursday, April 14, 2016 at 8:28:22 AM UTC-7, Jeroen Demeyer wrote: > > > True, but a polynomial with polynomial coefficients is a very different > thing than a multi-variate polynomial. Therefore, it's perfectly fine if > they behave differently. >
OK. I misremembered. I thought towers of multivariate polynomials behaved better than this, but the seem to do exactly the same thing: sage: R=ZZ['a','x']['b','y'] sage: S=ZZ['b','x']['a','y'] sage: aR=R.base().0 sage: bR=R.0 sage: S(aR^2+bR) a + b^2 which is a bit worrisome, but at least we don't support anything smart in any of these situations. -- 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 post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
