#18086: Twists of newforms
-------------------------------------+-------------------------------------
Reporter: pbruin | Owner:
Type: enhancement | Status: needs_review
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: | f1533dde29e01cbca26cb57e51a680a3853c6440
u/pbruin/18086-Newform_twist | Stopgaps:
Dependencies: #6837 |
-------------------------------------+-------------------------------------
Changes (by pbruin):
* status: new => needs_review
Old 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`.
New description:
As a follow-up to #6837, twists of newforms by Dirichlet characters should
be implemented. This ticket implements a method `Newform.twist()`, which
returns the twisted form as a `Newform`.
--
Comment:
Calculating the level of the twisted form is still only implemented in the
cases where [Atkin-Li, Theorem 3.1] applies. However, I currently don't
have time to find out if this can easily be done in greater generality,
and the current implementation suffices for #18061, which depends on this
ticket.
--
Ticket URL: <http://trac.sagemath.org/ticket/18086#comment:7>
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