Bill Allombert on Thu, 13 Jul 2017 19:49:49 +0200 |
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Re: ffgen |
On Thu, Jul 13, 2017 at 05:20:34PM +0200, Eric J. Van der Velden wrote: > Hi Bill, > > Thanks! I will try ffprimroot. > > I am sorry, I do not know the term "field generator". Do you mean like i in > F₉, which is of order 4, but 1 and i are a vectorspace basis over F₃ of F₉? A generator g of K is a element of K such that all subfields of K containing g are equal to K. If K is isomorphic to F_{p^n}, then g is a generator if and only if 1,g,...,g^(n-1) is a basis of K seen as a F_p vector space. Cheers, Bill.