#5976: [with patch; needs work] Add an Elliptic Curve Isogeny object
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 Reporter:  shumow         |       Owner:  shumow         
     Type:  enhancement    |      Status:  assigned       
 Priority:  major          |   Milestone:  sage-4.0.1     
Component:  number theory  |    Keywords:  Elliptic Curves
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Comment(by shumow):

 I forgot to mention in my last post that I made the isogeny now inherit
 from Morphism.  I decided on this because of Alex Ghitza's warning that he
 is planning on changing the "SchemeMorphism" class.  Also, the Weierstrass
 isomorphism class derives from the morphism class, not from
 SchemeMorphism.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5976#comment:23>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of 
Reinventing the Wheel

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