#4000: [with patch, needs work] Implement QQ['x'] via Flint ZZ['x'] +
denominator
------------------------------+---------------------------------------------
Reporter: malb | Owner: somebody
Type: enhancement | Status: new
Priority: major | Milestone: sage-wishlist
Component: basic arithmetic | Keywords:
Reviewer: | Author: Martin Albrecht
Merged: |
------------------------------+---------------------------------------------
Comment(by mhansen):
This gives the same answers for me before and after the patch.
{{{
sage: x = polygen(AA)
sage: r = QQbar.polynomial_root(x^5 - x - 1, CIF(RIF(0.1, 0.2),
RIF(1.0, 1.1))); r
sage: r.real().minpoly()
}}}
The only difference is the test on line 2262. It expected
{{{
cp = AA.common_polynomial(1/2*x^4 - 1/95*x^3 - 1/2*x^2 - 4)
}}}
but got
{{{
cp = AA.common_polynomial(x^4 - 2/95*x^3 - x^2 - 8)
}}}
I think that this is okay since they only differ by a multiple of 2 and
thus have the exact same roots.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4000#comment:27>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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