#7096: bug in dual isogeny computation
-------------------------------+--------------------------------------------
Reporter: cremona | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-4.2
Component: elliptic curves | Keywords: elliptic curve isogeny
Work_issues: | Author:
Reviewer: | Merged:
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Comment(by wuthrich):
Yet another bug with {{{dual}}}. I have to chase that. It does not look
like being related to the previously reported bugs.
{{{
k = GF(103)
E = EllipticCurve(k,[1,0,0,1,-1])
P = E(60,85)
phi = E.isogeny(P)
phi.dual()
}}}
gives
{{{
IndexError: list index out of range
}}}
in line 3789.
(I keep on adding these bugs here and I try to resolve as many as I can
with the patch for this. Only then I will open new tickets for the
remaining ones)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7096#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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