Andreas Enge on Wed, 15 Feb 2012 16:54:27 +0100 |
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
Re: Complex AGM |
On Wed, Feb 15, 2012 at 03:24:21PM +0000, John Cremona wrote: > For a definition of what "optimal" means and why it matters for > elliptic curve period computations, see http://arxiv.org/abs/1011.0914 In his PhD thesis, Dupont makes the additional assumption that if there are two "good" choices, then Im (b_n, a_n) > 0 (it could be that this is taken from Cox1984, I have not verified). So I would suggest to modify pari to compute the optimal sequence together with this normalisation. Andreas