Hi, I think we should be confident that the sum of integers is again an integer, the sum of rational numbers a rational number and that the sum of polynomials is a polynomial.
With Sage this is not the case. def ib(m, n): return sum(binomial(m*n-1, m*k)*OmegaPolynomial(m,k) for k in (0..n-1)) The terms "binomial(m*n-1, m*k)*OmegaPolynomial(m,k)" are of type <type 'sage.rings.polynomial.polynomial_integer_dense_flint.Polynomial_integer_dense_flint'> However "for n in (0..6): print(ib(2, n).list())" yields an AttributeError: 'int' object has no attribute 'list'. OK, it is not difficult to work around this. But would you agree to call this behavior a bug? -- 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 sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/de96a2b1-562c-4c09-9c38-07685a5bff4c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
