#11229: Rational maps attached to elliptic curve isogeny are incorrect
-------------------------------+--------------------------------------------
Reporter: johanbosman | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-4.7
Component: elliptic curves | Keywords: elliptic curves, isogeny
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
-------------------------------+--------------------------------------------
Comment(by cremona):
Maybe the case of degree 1 isogenies has not been tested properly.
You can use E.isomorphism_to(Eshort) instead in this case. The
Weierstrass isomorphisms were implemented long before isogenies, and have
a completely different type (though obviously one should be able to create
a degree 1 isogeny from an isomorphism, and vice versa).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11229#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
