Jeroen Demeyer on Thu, 19 Aug 2010 21:28:24 +0200 |
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Why is nfinit(f).zk not the same as nfbasis(f) ?? |
Hello pari-users, With the svn version of PARI, I get: gp> f = x^3 + x^2 - 2*x + 8 %1 = x^3 + x^2 - 2*x + 8 gp> nfbasis(f) %2 = [1, x, 1/2*x^2 - 1/2*x] gp> nfinit(f).zk %3 = [1, 1/2*x^2 + 1/2*x - 1, x] Is it normal to get different results here? I agree that a basis is not canonical, but it's not clear to me why nfbasis() uses a different algorithm than nfinit(). Jeroen.