| Karim Belabas on Fri, 05 Oct 2018 13:44:20 +0200 |
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| Re: mfatkineigenvalues |
* J E Cremona [2018-10-05 13:41]:
> If I call mfatkineigenvalues(mf,Q) where mf is a newspace output by
> mfinit(NK,0) for some NK with trivial character, then -- as far as I can
> tell from the documentation -- mfatkineigenvalues must compute the
> splitting of mf into Galois orbits. But if I have already computed that
> splitting (e.g. using mffields, or mfsplit) then that seems very wasteful.
>
> Would it be possible to design mfatkineigenvalues() so that (optionally)
> one could give the splitting information to it?
Already done: when the splitting is done it is automagically added to
the mf struct (same mechanism as for elliptic curves).
> Secondly (different but related): again in trivial character, it would be
> useful to have a function mfatkinmat() like mfheckemat().
mfatkininit provides it (in a slightly awkward way, but it handles
arbitrary characters...)
Cheers,
K.B.
--
Karim Belabas, IMB (UMR 5251) Tel: (+33) (0)5 40 00 26 17
Universite de Bordeaux Fax: (+33) (0)5 40 00 21 23
351, cours de la Liberation http://www.math.u-bordeaux.fr/~kbelabas/
F-33405 Talence (France) http://pari.math.u-bordeaux.fr/ [PARI/GP]
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