#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: Chris Wuthrich
Authors: Peter Bruin | Work issues:
Report Upstream: N/A | Commit:
Branch: | dd977f21a88f86e7ecc7712c1b921a23340f6879
u/pbruin/18086-Newform_twist | Stopgaps:
Dependencies: #6837, #18436, |
#18479 |
-------------------------------------+-------------------------------------
Changes (by pbruin):
* status: needs_work => needs_review
* work_issues: speed =>
Comment:
It turns out that the slowness in comment:15 can be solved by improving
the construction of Dirichlet groups so as to avoid computing roots of
unity until they are needed. (This basically comes down to allowing
Dirichlet groups without a user-specified root of unity.) Since the
problem is orthogonal to this ticket, I will create a different ticket to
solve it, and I am setting this one back to needs_review. (It probably
won't be necessary to make either ticket depend on the other.)
--
Ticket URL: <http://trac.sagemath.org/ticket/18086#comment:17>
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