#9391: kolyvagin_cohomology_class() method differs from doc
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Reporter: justin | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone:
Component: elliptic curves | Resolution:
Keywords: kolyvagin classes | Merged in:
Authors: Justin Walker | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by chapoton):
The problem happens when the conductor is 1.
{{{
sage: y = EllipticCurve('389a').heegner_point(-7,1)
sage: y.conductor()
1
sage: P=y.kolyvagin_cohomology_class()
BOOM
}}}
This is because the gcd of the empty list is 0. I do not know what to do
to solve the issue.
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Ticket URL: <http://trac.sagemath.org/ticket/9391#comment:1>
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