| Karim Belabas on Fri, 13 May 2005 18:20:56 +0200 |
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| Re: bug in ellminimalmodel() |
* Prof. J. E. Cremona [2005-04-27 22:46]:
> After ellminimalmodel() the second coefficient should be in {-1,0,1}
> but it isn't. A second call to ellminimalmodel() does the trick.
>
> John
>
>
> GP/PARI CALCULATOR Version 2.2.11
> (development CHANGES-1.1201)
> i686 running linux (ix86 kernel)
> 32-bit version
> compiled: Apr 26 2005, gcc-3.3.2 20031022 (Red
> Hat Linux 3.3.2-1)
> (readline v4.3 enabled, extended help
> available)
>
> Copyright (C) 2000-2005 The PARI
> Group
>
> PARI/GP is free software, covered by the GNU General Public License,
> and comes WITHOUT ANY WARRANTY WHATSOEVER.
>
> Type ? for help, \q to quit.
> Type ?12 for how to get moral (and possibly technical) support.
>
> parisize = 10000000, primelimit = 1000000
>
> gp > e=ellinit([1, -1, 1, -49952, 3713689]);
> gp > ellminimalmodel(e)
> %2 = [1, 2, 0, -615, 4615, ...
Indeed. It's now fixed in CVS.
Thanks!
Karim.
--
Karim Belabas Tel: (+33) (0)1 69 15 57 48
Dep. de Mathematiques, Bat. 425 Fax: (+33) (0)1 69 15 60 19
Universite Paris-Sud http://www.math.u-psud.fr/~belabas/
F-91405 Orsay (France) http://pari.math.u-bordeaux.fr/ [PARI/GP]