#8184: eclib upgrade and bugfix
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Reporter: cremona | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.2
Component: elliptic curves | Keywords: eclib
Author: John Cremona | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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We provide an upgrade to eclib to patch-level 9, i.e.
eclib-20080310.p9.spkg. This does two things:
1. Fixes a bug (found by Edray Goins and Jamie Wiegandt) in which
second descent quartics were not tested for real-solubility, and so
sometimes the rank bounds (and related selmer ranks) could be too high.
2. Enhances the data available from the two_descent class so that the
rank_bound and selmer_rank are separated, and both available.
The second item necessitated changes to the interface, which are here
included in the patch. In turn, some changes were needed in
sage/schemes/elliptic_curve/
Note that this affects #7575.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8184>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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