#15486: Lazy Evaluation of R_Characters for Modular Forms
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Reporter: | Owner:
elarson3 | Status: needs_work
Type: | Milestone: sage-6.2
defect | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Peter Bruin
modular forms | Work issues:
Keywords: | Commit:
Authors: Eric | dc4df256d57ba67f02bdaa9f4500ce919dbc9544
Larson | Stopgaps:
Report Upstream: N/A |
Branch: |
public/15486 |
Dependencies: |
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Comment (by pbruin):
Here is the new branch:
[http://git.sagemath.org/sage.git/diff/?id2=12bbca024b3a3728e35c76e1e11be08138d17370&id=5f443be720d13dd4f043f34a973a879b446e9dcb
u/pbruin/15486-roots_of_unity]
It makes both the `DirichletGroup` constructor and the `zeta(n)` method of
number fields more intelligent by avoiding the computation of the group of
all roots of unity or its order. Would this be a suitable alternative
solution? It is unfortunately completely disjoint from Eric's original
solution, but I do not see how that approach can easily detect invalid
base rings as in the above doctest failure.
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Ticket URL: <http://trac.sagemath.org/ticket/15486#comment:7>
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