#18086: Twists of newforms
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Reporter: pbruin | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.6
Component: modular forms | Resolution:
Keywords: twist newform | Merged in:
Dirichlet character | Reviewers:
Authors: Peter Bruin | Work issues:
Report Upstream: N/A | Commit:
Branch: | 5284dda20fd2c4932e36899f8d3394eebc435030
u/pbruin/18086-Newform_twist | Stopgaps:
Dependencies: #6837 |
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Description changed by pbruin:
Old description:
> As a follow-up to #6837, twists of newforms by Dirichlet characters
> should be implemented.
>
> Ater #6837, the method `Newform.twist()` (inherited from
> `ModularForm_abstract`) fails because newforms do not have an
> `is_cuspidal()` method. Instead of fixing this directly, `Newform`
> should have its own `twist()` method, which should return the twisted
> form as a `Newform`.
New description:
As a follow-up to #6837, twists of newforms by Dirichlet characters should
be implemented. More precisely, the class `Newform` should have a
`twist()` method, which should return the twisted form as a `Newform`.
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Ticket URL: <http://trac.sagemath.org/ticket/18086#comment:5>
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