#15667: Time anomaly in finding orders of points on an elliptic curve over a
finite
field
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Reporter: cremona | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: elliptic curves | Resolution:
Keywords: point order | Merged in:
finite field | Reviewers: Jean-Pierre Flori
Authors: John Cremona | Work issues:
Report Upstream: N/A | Commit:
Branch: | 623ffa3fdcd8500c1cba35e0d670aec5c956ee1e
u/cremona/ticket/15667 | Stopgaps:
Dependencies: |
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Comment (by jpflori):
I'll review it, I was rewriting down the changes of variables (and ending
up with different changes though the result should hopefully be the same).
I'll be interested in seeing the thesis to double check computations.
And maybe it would be worth adding a little more doctests for such special
elliptic curves.
(Or maybe test random curves with such j-invariants over small finite
fields and compare directly with cardinality_exhaustive.)
--
Ticket URL: <http://trac.sagemath.org/ticket/15667#comment:11>
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