#9322: bug in simon_two_descent for elliptic curves
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Reporter: cremona | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone:
Component: algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by cremona):
{{{
j...@ubuntu%sage -gp
GP/PARI CALCULATOR Version 2.3.5 (released)
...
? bnf=bnfinit(y^2-y-232);
? w=Mod(y,y^2-y-232)
%8 = Mod(y, y^2 - y - 232)
? e=ellinit([2-w,18+3*w,209+9*w,2581+175*w,852-55*w]);
? bnfellrank(bnf,e)
courbe elliptique : Y^2 = x^3 + Mod(9*y + 308, y^2 - y - 232)*x^2 +
Mod(1200*y + 27936, y^2 - y - 232)*x + Mod(57968*y + 1054096, y^2 - y -
232)
points triviaux sur la courbe = [[1, 1, 0]]
#S(E/K)[2] = 4
#E(K)/2E(K) >= 1
#III(E/K)[2] <= 4
rang(E/K) >= 0
listpointsmwr = []
%10 = [0, 2, []]
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9322#comment:1>
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