#7935: local_data for elliptic curves over number fields
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Reporter: wuthrich | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.1
Component: elliptic curves | Keywords: elliptic curve, number fields,
local data, tamagawa
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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First of all, I spotted the following bug:
{{{
K.<a> = NumberField(x^2-38)
E = EllipticCurve([a,1/2])
E.global_integral_model()
}}}
which yields
{{{
AssertionError: bug in global_integral_model: [0, 0, 0, 4/361*a, 4/6859]
}}}
and that is easy to fix. But I also wish to add a {{{tamagawa_product}}}
and improve the documentation.
I will post a patch later today.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7935>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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