set_field

set_field(rootlist)

:: Set an algebraic number field as the currernt ground field.

return

0

rootlist

A list of root

• set_field() sets an algebraic number field generated by root in rootlist over Q.
• You don't care about the order of root in rootlist, because root are automatically ordered internally.

[0] A=newalg(x^2+1);
(#0)
[1] B=newalg(x^3+A);
(#1)
[2] C=newalg(x^4+B);
(#1)
[3] set_field([C,B,A]);
0

Reference

section algtodalg, dalgtoalg, dptodalg, dalgtodp

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