#19276: precision problem computing heights on elliptic curves
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Reporter: | Owner:
cremona | Status: needs_review
Type: | Milestone: sage-6.9
defect | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
elliptic curves | Work issues:
Keywords: | Commit:
height precision | 3ea3fc73d85a9b50fb618f63c345bce415cf7e1a
Authors: John | Stopgaps:
Cremona |
Report Upstream: N/A |
Branch: |
u/cremona/19276 |
Dependencies: |
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Comment (by cremona):
Replying to [comment:3 jdemeyer]:
> I think that the problem you're trying to solve (massive cancellation in
real embeddings) is general enough that it should have a general solution.
In other words, I think the "right" solution to this ticket does not
involve any changes to the elliptic curve code, but to the number field
code.
>
> What do you think?
I think that I need to compute heights now! So I am going to use this
code as it is anyway.
Besides that, Marco Caselli and I are implementing a vastly better way to
compute local archimedean heights using AGM (which is non-trivial for
complex embeddings).
But your general point certainly stands.
--
Ticket URL: <http://trac.sagemath.org/ticket/19276#comment:4>
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