Hello, all, I am going to manipulate Legendre (P) polynomials. So I do something like this:
sage: P.<x>=QQ[] sage: #generate de first Lagrange polynomial sage: s=[legendre_P(i,x) for i in [0..2]] sage: print s [1, x, 3/2*x^2 - 1/2] sage: #now, look at the parents sage: s[0].parent() Integer Ring sage: s[1].parent() Univariate Polynomial Ring in x over Rational Field Ok, this is correct, and seems nice; but I want to evaluate these polynomials for different values of x, and you cannot evaluate a member of "Integer Ring" at say, x=1/21... So I need to compute the parent of polynomials (which possibly are scalars) in all my functions, make test and so on.... I have found a work-around: sage: s=[P(legendre_P(i,x)) for i in [0..2]] Then, I get: sage: s[0].parent() Univariate Polynomial Ring in x over Rational Field Ok, but is there some other way to do this? Yours t. -- 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 http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/groups/opt_out.
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