#7262: Have multiplcation_by_m() return an EllipticCurveIsogeny object
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Reporter: wuthrich | Owner: davidloeffler
Type: defect | Status: needs_review
Priority: minor | Milestone: sage-4.3.1
Component: elliptic curves | Keywords: elliptic curves, isogeny,
Author: Craig Citro | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by cremona):
Am I doing something stupid here? The patch applies fine but when I run
the test I get
this from ell_generic.py:
{{{
sage: E.multiplication_by_m_isogeny(7)
AttributeError: 'EllipticCurve_rational_field' object has no attribute
'multiplication_by_m_isogeny'
}}}
which makes no sense since E has type {{{EllipticCurve_rational_field}}}
which derived from {{{EllipticCurve_generic}}}, which is where
multiplication_by_m_isogeny() is defined.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7262#comment:10>
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