#8014: Make `EllipticCurveIsogeny` objects faster to create via lazy evaluation
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Reporter: craigcitro | Owner: cremona
Type: enhancement | Status: new
Priority: minor | Milestone:
Component: elliptic curves | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by cremona):
See also #7368 for an isogeny wishlist.
Chris W and I have lots of other ideas for redesigning the isogeny code.
At present it consists of a lot of intricately related functions and the
code is hard to get into. And the file ell_curve_isogeny.py is very long
(4790 lines): I plan to move lines 3733 to the end when we add
implementations for {2,3,5,7,13}-isogenies in characteristics {2,3} for
{j=0, j!=0}, which are currently being worked out by my student Kimi
(5*2*2=20 special cases!)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8014#comment:1>
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