#8972: Inversion and fraction fields for power series rings
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Reporter: SimonKing | Owner: AlexGhitza
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.4.2
Component: algebra | Keywords: power series ring, fraction field
Author: Simon King | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by SimonKing):
PS: Even the following works:
{{{
sage: 1/(t+x)
1/t - 1/t^2*x + (-1/-t^3)*x^2 + (1/-t^4)*x^3 + 1/t^5*x^4 - 1/t^6*x^5 +
1/t^7*x^6 - 1/t^8*x^7 + 1/t^9*x^8 + (1/-t^10)*x^9 + 1/t^11*x^10 +
(1/-t^12)*x^11 + 1/t^13*x^12 + (1/-t^14)*x^13 + (-1/-t^15)*x^14 +
(1/-t^16)*x^15 + (-1/-t^17)*x^16 + (1/-t^18)*x^17 + 1/t^19*x^18 -
1/t^20*x^19 + O(x^20)
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8972#comment:5>
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