|Bill Allombert on Thu, 02 Jun 2005 01:31:13 +0200|
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
|Re: Proposed elldata database at the PARI workshop|
On Wed, Jun 01, 2005 at 03:02:42PM +0200, Bill Allombert wrote: > > If I'm allowed to add one more wishlist item: a function ellgens(E), > > returning the generators of the rational elliptic curve E. This > > shouldn't be too hard to implement using ellidentify() and then looking > > up the generators of the curbe. > > > > Hypothetical example: > > gp> E = ellinit("9744C2"); > > gp> ellgens(E) > > %40 = [[-11, 14], [-10, 18]] > > Yes, this is planned, but I need to rewrite the elldata files to include > the generators. If you could provide a script that build the new elldata > files from John Cremona database, that would help a lot! John was kind enough to send me a version of his database in GP format, so I have rebuild the archive (still available at <http://pari.math.u-bordeaux.fr/~bill/elldata.tar.gz>). I have not yet updated the patch to support the extra info, but you can already do with the current patch: ? ellsearch("9744C2") %1 = [[-11, 14], [-10, 18]] to get the generators. Cheers, Bill.