#13054: Pernicious bug for algebraic numbers
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Reporter: rbeezer | Owner: davidloeffler
Type: defect | Status: new
Priority: major | Milestone: sage-5.7
Component: number fields | Resolution:
Keywords: sd40.5 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by jdemeyer):
Why is this a bug in PARI? It seems to me that PARI behaves as
documented. The degree of the minimal polynomial is less than the degree
of the field.
What would you ''expect'' PARI to do in this case?
{{{
sage: R.<y> = QQ['y']
sage: best_elt = (1/16*y^2 - 134217728)._pari_()
sage: pari_poly = y^4 - 4294967296*y^2 + 54265257667816538374400
sage: rev = parent(best_elt.Mod(pari_poly).modreverse().lift())
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13054#comment:3>
Sage <http://www.sagemath.org>
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