Karim BELABAS on Thu, 18 Jul 2002 13:26:59 +0200 (MEST) |
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Re: weird factor() output |
On Fri, 5 Jul 2002, Igor Schein wrote: > ? factor(x-I) > > [x - #<16382> 1] > > Looks like pari is confused about I being complex. An interface bug in factornf (= polfnf): when the input was a perfect power, it returned a result with lifted coefficients (as opposed to t_POLMOD). The latter were not translated back to human readable form by factor(). [ I introduced the problem recently when I rewrote the polynomial factorizers (in char. 0) around van Hoeij's method ] Karim. -- Karim Belabas Tel: (+33) (0)1 69 15 57 48 Dép. de Mathematiques, Bat. 425 Fax: (+33) (0)1 69 15 60 19 Université Paris-Sud Email: Karim.Belabas@math.u-psud.fr F-91405 Orsay (France) http://www.math.u-psud.fr/~belabas/ -- PARI/GP Home Page: http://www.parigp-home.de/