#7958: Conversion of rationals into the fraction field of integer polynomials
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Reporter: spancratz | Owner: robertwb
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.3.2
Component: coercion | Keywords:
Work_issues: | Author: spancratz
Upstream: N/A | Reviewer:
Merged: |
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Changes (by spancratz):
* priority: minor => major
* status: needs_work => needs_review
Comment:
To see that this issue is now resolved (for rationals and number fields),
consider
{{{sage: _.<x> = ZZ[]
sage: K.<a> = NumberField(x^5-3*x^4+2424*x^3+2*x-232)
sage: R.<b> = K.ring_of_integers()
sage: S.<y> = R[]
sage: F = Frac(S)
sage: F(1/a)
a^4 - 3*a^3 + 2424*a^2 + 2/232
sage: F(1/a).numerator()
a^4 - 3*a^3 + 2424*a^2 + 2
sage: F(1/a).denominator()
232
}}}
But the last three lines highlight a bug in the printing routines.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7958#comment:4>
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