#17283: Check consistency when constructing Dirichlet characters
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Reporter: pbruin | Owner:
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-6.4
Component: modular forms | Resolution:
Keywords: dirichlet | Merged in:
character | Reviewers: Jean-Pierre Flori
Authors: Peter Bruin | Work issues: doc
Report Upstream: N/A | Commit:
Branch: | ba9ce419f4300ebda1ac209b6fc050f9f6c9abbf
u/pbruin/17283-DirichletCharacter_check| Stopgaps:
Dependencies: #17317 |
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Comment (by pbruin):
Replying to [comment:8 jpflori]:
> Just a little remark, we could fail faster in case the list of images
does not have the right length (in case the orders are not automatically
precomputed when Z/nZ is created, I don't remember).
The unit group of Z/nZ is computed (generators and orders) when the
Dirichlet group is constructed.
> And that does not really matters anyway as feeding it with wrong length
of images is just asking for trouble.
Indeed, it is better to optimise for the case where the input is valid.
--
Ticket URL: <http://trac.sagemath.org/ticket/17283#comment:10>
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