#13041: Cannot convert elements of cyclotomic fields to algebraic numbers
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Reporter: rbeezer | Owner: AlexGhitza
Type: defect | Status: new
Priority: minor | Milestone: sage-5.1
Component: algebra | Resolution:
Keywords: sd40.5 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by arminstraub):
Unfortunately, at the moment, elements of number fields don't
coerce/convert to the algebraic closure QQbar. This is an instance of
#12715 (Number field embeddings should go via AA and QQbar).
Note that you can coerce elements to numerical complex numbers though:
{{{
sage: C.<z> = CyclotomicField(7)
sage: CC(z)
0.623489801858734 + 0.781831482468030*I
sage: QQbar(z)
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
<your snip>
TypeError: Illegal initializer for algebraic number
}}}
I would therefore suggest to mark this ticket as a duplicate. (I don't
immediately see a way to do that myself, so please let me know if I could
and should have done so myself.)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13041#comment:1>
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