#16773: Analytic Rank Bound
-------------------------------------+-------------------------------------
Reporter: spice | Owner: spice
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.5
Component: elliptic curves | Resolution:
Keywords: elliptic curves, | Merged in:
analytic rank, l-functions | Reviewers: William Stein
Authors: Simon Spicer | Work issues:
Report Upstream: N/A | Commit:
Branch: | 4d5bbec0ebddce3b202d2ab9ff84463ecfdea094
u/spice/analytic_rank_bound | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Comment (by vbraun):
This happens randomly, too:
{{{
sage -t --long src/sage/schemes/elliptic_curves/ell_rational_field.py
**********************************************************************
File "src/sage/schemes/elliptic_curves/ell_rational_field.py", line 1665,
in
sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.?
Failed example:
Z.analytic_rank_upper_bound(max_Delta=2.8,adaptive=False, # long time
root_number="ignore",bad_primes=bad_primes) # long time
Exception raised:
Traceback (most recent call last):
File
"/scratch/buildbot/sage/redhawk-1/sage_git/build/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 488, in _run
self.compile_and_execute(example, compiler, test.globs)
File
"/scratch/buildbot/sage/redhawk-1/sage_git/build/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 850, in compile_and_execute
exec(compiled, globs)
File "<doctest
sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.?[26]>",
line 2, in <module>
root_number="ignore",bad_primes=bad_primes) # long
time
File "sage/lfunctions/zero_sums.pyx", line 1728, in
sage.lfunctions.zero_sums.LFunctionZeroSum_EllipticCurve.analytic_rank_upper_bound
(build/cythonized/sage/lfunctions/zero_sums.c:13597)
return run_computation(max_Delta)
File "sage/lfunctions/zero_sums.pyx", line 1673, in
sage.lfunctions.zero_sums.LFunctionZeroSum_EllipticCurve.analytic_rank_upper_bound.run_computation
(build/cythonized/sage/lfunctions/zero_sums.c:12682)
bound = self._zerosum_sincsquared_parallel(Delta=Delta,
File "sage/lfunctions/zero_sums.pyx", line 1453, in
sage.lfunctions.zero_sums.LFunctionZeroSum_EllipticCurve._zerosum_sincsquared_parallel
(build/cythonized/sage/lfunctions/zero_sums.c:12269)
y += summand[1]
TypeError: unsupported operand type(s) for +=: 'float' and 'NoneType'
**********************************************************************
1 item had failures:
1 of 94 in
sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.?
[815 tests, 1 failure, 216.40 s]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16773#comment:42>
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