#5156: [with patch; needs review, doctest fix] implement computation of the
conjectural (analytic) order of Sha for elliptic curves over Heegner
quadratic imaginary fields
---------------------------+------------------------------------------------
Reporter: was | Owner: was
Type: enhancement | Status: new
Priority: major | Milestone: sage-3.4.1
Component: number theory | Resolution:
Keywords: |
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Comment (by cremona):
On my 32-bit machine I get the so-called 64-bit answer.
I ought to be able to say what might cause mwrank to produce different
gens, but I cannot. As this curve is in the database, then IF you have
the large database installed (with gens) it will use those gens and be
deterministic, while ELSE it will compute them.
For this doctest I suggest killing the display of P and changing the last
line into
{{{
sage: len(P.division_points(2))
1
}}}
By the way, I am worried that part of this patch will conflict with #4274
which affects the same file, parsing the mwrank output, which I reviewed
and repatched earlier today, and which mabshoff has already merged.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5156#comment:11>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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