#16977: remove 32-bit limitations in eclib modular symbols interface
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Reporter: cremona | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.4
Component: elliptic curves | Resolution:
Keywords: eclib 32-bit | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by cremona):
Replying to [comment:4 jdemeyer]:
> John, what are the requirements for the `ECModularSymbol` class, do you
require a minimal model?
I had to check the code in eclib for this, and the answer seems to be
"yes". The C++ test program for this functionality minimises the input
curve. If not minimal then it is likely that the incorrect Hecke
eigenvalue for non-minimal primes will be used, with the result that the
modular symbol eigenspace will not be found correctly.
My C++ code documentation has improved since I started contributng to Sage
but is still not perfect!
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Ticket URL: <http://trac.sagemath.org/ticket/16977#comment:7>
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