#9410: EC.local_data() can't handle extensions of number fields
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Reporter: arminstraub | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone:
Component: elliptic curves | Keywords: local_data
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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In 4.4.4 the following code produces a ValueError:
{{{
sage: K.<a> = NumberField(x^2+1)
sage: L.<b> = K.extension(x^2-17)
sage: E = EllipticCurve(L, [1,1])
sage: E.local_data()
}}}
As a workaround, one can use absolute_field:
{{{
L1.<c> = L.absolute_field()
E1 = EllipticCurve(L1, [1,1])
E1.local_data()
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9410>
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