Hi,
The question [1] from ask.sagemath.org seems to be related to a
coercion bug. I copy/paste the example here
{{{
sage: K2.<s2> =NumberField(x^3 - 2, 's2', embedding=CC(-0.63,1.09))
sage: CIF.coerce_map_from(K)
Composite map:
From: Number Field in s2 with defining polynomial x^3 - 2
To: Complex Interval Field with 53 bits of precision
Defn: Generic morphism:
From: Number Field in s2 with defining polynomial x^3 - 2
To: Complex Lazy Field
Defn: s2 -> -0.6299605249474365? + 1.091123635971722?*I
then
Call morphism:
From: Complex Lazy Field
To: Complex Interval Field with 53 bits of precision
sage: CIF(s2)
Traceback (most recent call last)
...
TypeError: unable to coerce to a ComplexIntervalFieldElement
}}}
Should I open a ticket ?
Cheers,
Vincent
[1] http://ask.sagemath.org/question/1664/from-number-field-to-interval-field
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