#18831: Hyperelliptic point counting various methods disagree
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Reporter: katestange | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.8
Component: number theory | Resolution:
Keywords: hyperelliptic curves, point | Merged in:
counting | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by jpflori):
> {{{
> (ZZ(4*g).exact_log(p) + n//2).floor() + 1
> }}}
> The `4*g` part does not look so good.
Actually it makes senses, it comes from expressing the trace of the
frobenius on an extension as a sum of powers of the eigenvalues.
So maybe the `//` is the problem.
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Ticket URL: <http://trac.sagemath.org/ticket/18831#comment:4>
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