#10581: change Large Cremona database format and extend it
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Reporter: gagansekhon | Owner: cremona
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.0
Component: elliptic curves | Keywords: cremona, stein, watkins,
elliptic curves, database
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by cremona):
Replying to [comment:2 gagansekhon]:
> Question on 2. How are ids determined?
3 components are concatenated: (1) the conductor (positive integer); (2)
the isogeny class (1 or more letters a..z); (3) the number of the curve in
the class (positive integer).
For details of the coding in (2), and how the classes and curves are
ordered, see
The elliptic curve database for conductors to 130000:
ANTS VII Proceedings: F.Hess, S.Pauli and M.Pohst (eds.), ANTS VII,
Lecture Notes in Computer Science 4076 (2006), pages 11-29.
http://dx.doi.org/10.1007/11792086_2
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10581#comment:3>
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