|Bill Allombert on Thu, 22 Mar 2007 18:09:11 +0100|
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|Re: Newbie question: lifting polynomials coefficient|
On Thu, Mar 22, 2007 at 04:14:43PM +0100, Édouard Gilbert wrote: > Hi everyone, > > Here is a simple problem that can be easliy avoided in a very > unelegant way. > The simple question is : how to lift the t_INTMOD coefficients of a > t_POLMOD? > > For example > > P = Mod(Mod(1, 2)*X + Mod(1, 2), Mod(1, 2)*X^2 + Mod(1, 2)) > % (...) > > lift(P) > % Mod(1, 2)*X + Mod(1, 2) > > Is there a nicer solution to this? I am not sure if that qualify as nicer but liftint(x) = Mod(lift(x.pol),lift(x.mod)) should do what you want. Cheers, Bill.