#16916: cuspform_lseries() method for a new form has precision issues
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Reporter: tornaria | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.4
Component: modular forms | Keywords: lseries
Merged in: | Authors: tornaria
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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{{{
sage: f = Newforms(67, names='a')[0]
sage: L = f.cuspform_lseries()
...
RuntimeError: Unable to create L-series, due to precision or other limits
in PARI.
}}}
This is because the field {{{prec}}} is used both for the numerical
precision ''and'' for the number of coefficients computed.
Since the L-functions class has a {{{num_coeffs()}}} method, the proper
thing is to use that to know how many coefficients to compute.
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Ticket URL: <http://trac.sagemath.org/ticket/16916>
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