|Bill Allombert on Fri, 07 Apr 2017 23:56:54 +0200|
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|Re: Annoying typing problem|
On Fri, Apr 07, 2017 at 02:34:10PM -0700, Watson Ladd wrote: > Dear all, > > I want to convert the output of rnfdisc(K, pol) into an element of > K. If it was always a vector, this would be easy, the same as if it > was always a polmod or integer. But sadly it is sometimes one and > sometimes the other. I have searched the manual and found nothing that > works. This would be an easy function to write if I could tell what > type rnfdisc(K, pol) has, but there is no function for that either. Maybe you can use nfbasistoalg resp. nfalgtobasis ? They actually work for all formats not just t_VEC resp. t_POLMOD. ? N=nfinit('a^2+1); ? nfbasistoalg(N,a) %14 = Mod(a,a^2+1) ? nfbasistoalg(N,[1,2]~) %15 = Mod(2*a+1,a^2+1) ? nfbasistoalg(N,Mod(a+1,a^2+1)) %16 = Mod(a+1,a^2+1) Cheers, Bill.