#7712: error with polynomial with interval coefficients
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Reporter: zimmerma | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.4
Component: basic arithmetic | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by zimmerma):
> Sorry, my last comment was not clear. The method call is called when you
do return C(0,0,0).
with {{{C(0,0,0)}}} I see no problem:
{{{
sage: P.<y,z> = PolynomialRing(RealIntervalField(2))
sage: Q.<x> = PolynomialRing(P)
sage: C = (y-x)^3
sage: a=C(0,0,0)
sage: type(a)
<type 'sage.rings.real_mpfi.RealIntervalFieldElement'>
sage: a.lower()
0.00
sage: a.upper()
0.00
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7712#comment:10>
Sage <http://www.sagemath.org>
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