|Xavier-François Roblot on Thu, 04 Dec 2008 13:45:05 +0100|
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|lift of FFELT|
Hi guys,at the moment, applying lift() to an FFELT results in doing nothing (cf. gen3.c:2877). I think it would more sensible to return the corresponding polynomial with coefficients lifted in Z. I know there are other ways to achieve this result but I believe that would be consistent with the use of lift() to go from INTMOD (which are also elements of a finite ring) to INT. BTW, ffgen for primitive finite fields does not work:
(12:48) gp > ffgen(ffinit(5,1), x) *** at top-level: ffgen(ffinit(5,1),x) *** ^-------------------- *** ffgen: bug in PARI/GP (Segmentation Fault), please reportso the only to get a generator of the multiplicative group is to use znprimroot which returns a INTMOD. Hence, the need to have one common function to deal with primitive and imprimitive cases at the same time.
Take care, -- Xavier-François Roblot Institut Camille Jordan Université Lyon 1 21 avenue Claude Bernard 69622 Villeurbanne cedex http://math.univ-lyon1.fr/~roblot