#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, David
        Authors:  Peter Bruin        |  Loeffler
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/davidloeffler/18086-rebased      |  751bf48f8c2f65fd4a7478e0b22fbe76c6edf3bb
   Dependencies:  #6837, #18436,     |     Stopgaps:
  #18479                             |
-------------------------------------+-------------------------------------

Comment (by davidloeffler):

 OK, so it turns out that:
 - the reason I couldn't get the develop branch to compile was that I was
 using "sage -b" to recompile after switching between branches, which is
 not robust when there are changes to packages; it seems to be safer to use
 "make";
 - two of the three changes in the patch I uploaded earlier had already
 been fixed by other patches of Peter's, which was the cause of the
 conflict.

 I've now uploaded a patch with the one extra change that Peter hadn't
 already fixed -- {{{minimize_base_ring}}} returns an error when the base
 is a relative number field, which is relevant if you create a newform in a
 space with a specified character, so the Hecke eigenvalue field is a
 relative field with the coefficient field of the character as its base.
 Now I think we're now good to go.

--
Ticket URL: <http://trac.sagemath.org/ticket/18086#comment:32>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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