idealaddtoone(nfinit(x),[1,[;]]);
K=nfinit(x^2+23); A=idealhnf(K,x/2);
idealtwoelt(K, 3, 6)
idealtwoelt(K, A)
idealtwoelt(K, A, x)
idealtwoelt(K, [;])
idealtwoelt(K, [;], 1)
idealtwoelt(K, [;], 0)
nf=nfinit(t^3-t^2-383270*t+54978000);
A=idealhnf(nf, 2748900, 71779/66*t^2+579907/66*t-278805100);
idealtwoelt(nf, A) \\ #2437
