Rational points on elliptic curves over the rationals
Using ellrankinit
ellrankinit allows to initialize the number field data needed
by ellrank. This allows to experiment with ellrank without
recomputing it.
? E=ellinit([0,-nextprime(2^40)]);
? #
? F=ellrankinit(E);
time = 473 ms.
? ellrank(F)
time = 25 ms.
%29 = [0,2,0,[]]
? ellrank(F,4)
time = 296 ms.
%30 = [2,2,0,[[438181552600303688294601386/338005907