#9927: non-squarefree Hecke operators on BrandtModule
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Reporter: AlexGhitza | Owner:
Type: defect | craigcitro
Priority: major | Status: new
Component: modular forms | Milestone: sage-6.4
Keywords: brandt module, hecke operator | Resolution:
Authors: | Merged in:
Report Upstream: N/A | Reviewers:
Branch: | Work issues:
Dependencies: | Commit:
| Stopgaps:
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Comment (by tornaria):
The reason why the 'direct' algorithm is broken for non-squarefree n is
that the base class AmbientHeckeModule needs to know the character of the
modular form.
Since the BrandtModule corresponds to modular forms with trivial
character, a fix is to just implement the character() method returning a
trivial character.
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Ticket URL: <http://trac.sagemath.org/ticket/9927#comment:5>
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