Bill Allombert on Sun, 26 Mar 2017 12:19:27 +0200


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Re: Mwrank 

On Sun, Mar 26, 2017 at 02:40:16PM +0430, Benyamin Gholami wrote:
> it would be very nice if Mwrank of J.Cremona can be usable in pari

It is, see <https://pari.math.u-bordeaux.fr/dochtml/ellrank.html>.

Though it might be possible to write a simpler script using externstr.
Something like

mwrank(E)=eval(externstr(Str("echo '",E[1..5],"'|mwrank -q -v0 -o"))[-3..-3][1])

might work.

? E=ellinit("5077a1");
? mwrank(E)
%10 = [[3],[[1,-1],[-2,3],[-7/4,25/8]]]

Cheers,
Bill.