#16743: Extend IsogenyClass_EC to work over number fields
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Reporter: cremona | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: elliptic curves | Resolution:
Keywords: isogeny class | Merged in:
Authors: John Cremona | Reviewers: Jeroen Demeyer
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/ticket/16743 | 2d89c050dc89bc4dcb760e3558304c7c61cf119d
Dependencies: #11327, #16764, | Stopgaps:
#16806 |
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Comment (by jdemeyer):
Replying to [comment:41 cremona]:
> It's pretty shocking that to take a list of 4 elliptic curves and
compute their j-invariants and count the distinct ones takes a long time!
Even if it is over a number field of degree 6. But so be it.
No no, it is because those 2 tests depend on an earlier `# long time`
test. The following doesn't work:
{{{
sage: x = answer_to_the_ultimate_question() # long time (7.5 million
years)
sage: x
42
}}}
If you run this without `--long` the first line will be skipped and the
second line will therefore fail.
--
Ticket URL: <http://trac.sagemath.org/ticket/16743#comment:42>
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