#15204: Fix gap cyclotomics to sage
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: interfaces | Resolution:
Keywords: | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by tscrim):
* status: new => needs_review
Old description:
> Current gap expects a particular method of `_n()` which is provided by
> `CyclotomicField` but not by others, in particular
> `UniversalCyclotomicField`. Fixes this by catching this exception and
> converting through the `CyclotomicField`.
New description:
Current gap expects a particular method of `_n()` which is provided by
`CyclotomicField` but not by others, in particular
`UniversalCyclotomicField`.
{{{
sage: libgap.E(3).sage(ring=UniversalCyclotomicField())
AttributeError: 'UniversalCyclotomicField_with_category' object has no
attribute '_n'
}}}
This ticket fixes this by catching this exception and converting through
the `CyclotomicField`.
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Ticket URL: <http://trac.sagemath.org/ticket/15204#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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