#10236: bug in modular symbols for elliptic curves
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Reporter: wuthrich | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-4.6.2
Component: elliptic curves | Keywords: modular symbols
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by wuthrich):
One guess might be that I misinterpreted what the output of eclib is. I
assumed that in line 553 in ell_modular_symbol.py that the output of
{{{
sage: from sage.libs.cremona.newforms import ECModularSymbol
sage: E = EllipticCurve('11a1')
sage: m = ECModularSymbol(E)
sage: m(1/2)
2
}}}
meant that 2 pi i \int_{r}^{0} f(z) dz = m(r) * Omega
where f is the modular form and Omega = 1.2692 is the real period. Maybe
this is not correct. Then the documentation in
sage.libs.cremona.newforms.pyx should be improved.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10236#comment:1>
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