#8344: Factor constant polynomials over QQbar
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Reporter: boothby | Owner: AlexGhitza
Type: defect | Status: needs_info
Priority: critical | Milestone: sage-4.3.4
Component: basic arithmetic | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by zimmerma):
Dear John,
your method seems ok to me, however I can't reproduce your first example
in Sage 4.3.3:
{{{
sage: x = polygen(QQbar)
sage: f = 3*x^2-2
sage: lc = f.leading_coefficient()
sage: Factorization([(x-r,e) for r,e in f.roots()])
(x - 0.8164965809277260?) * (x + 0.8164965809277260?)
sage: Factorization([(x-r,e) for r,e in f.roots()],unit=1)
(x - 0.8164965809277260?) * (x + 0.8164965809277260?)
sage: Factorization([(x-r,e) for r,e in f.roots()],unit=lc)
...
TypeError: Illegal initializer for algebraic number
sage: type(lc), parent(lc)
(<class 'sage.rings.qqbar.AlgebraicNumber'>, Algebraic Field)
}}}
Does it depend on another ticket?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8344#comment:9>
Sage <http://www.sagemath.org>
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