sea21 wrote:
Thanks for all the helpful replies! I understand the problem now. How do
I install the full seadata package if I am using the Windows version of
Sage on Virtual Box?
I don't know what the (Linux distribution of the) ova ships with, and
depends on whether you at all have internet access from the virtual machine.
Just download
http://pari.math.u-bordeaux.fr/pub/pari/packages/seadata.tgz (probably
from Windows), copy the file into some temporary directory in your
virtual machine, start a shell and change to that directory, and there do
$ tar xzf seadata.tgz # extract the GNU-zip-compressed tar
$ cp data/seadata/* "$SAGE_ROOT"/local/share/pari/seadata/
$ rm -rf data/
where $SAGE_ROOT is what
sage: print SAGE_ROOT
gives, the "root" of your Sage installation.
(You can of course delete seadata.tgz afterwards as well.)
Would it be worth providing an optional Sage package for this, for
convenience? (It would also be slightly smaller than PARI's .tgz ...)
-leif
On Wednesday, May 15, 2013 8:07:48 PM UTC+8, John Cremona wrote:
On 15 May 2013 10:47, John Cremona <[email protected]
>> The PARI package in Sage only has the "small" database of modular
>> polynomials, suitable for primes up to about 350 bits. You would
need the
>> full seadata database.
>
> See http://pari.math.u-bordeaux.fr/packages.html
<http://pari.math.u-bordeaux.fr/packages.html>. It should be easy
> to download that and put it in the right place in the Sage
> installation, which is SAGE_ROOT/local/shar/pari. There is already
> the seadata in there but as Jeroen says, it is the small version.
I tested this. AFter putting the large seadata files into that
place the code
sage: p
10566623376041669505825220895462627801380145726624712771836144280024219722297939525451022774579043146020265329009462778097121538072213487555318041328039599
sage: a4
6557325753041215216697541661243177462316789827714644669153173743634615853451990973713919498189870050066222585898470391225455349541996119434962754618249308
sage: a6
3887529832007272230349363633177495741990999092935596186265775681498612008751646149414901742385996951003068331698140100902826619262789957720578797201032523
sage: E = gp.ellinit([0,0,0,a4,a6])
sage: sage: ap = E.ellap(p)
runs fine.
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