#13662: matrix() fails for polynomial quoutient rings over inexact rings
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Reporter: saraedum | Owner: roed
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-6.3
Component: padics | Resolution:
Keywords: sd59 | Merged in:
Authors: Julian Rueth | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/saraedum/ticket/13662 | 50132187410c11a5c4a5407a28453d14446b87d2
Dependencies: #14482 | Stopgaps:
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Comment (by saraedum):
Replying to [comment:15 saraedum]:
> This failing doctest is a problem:
> {{{
> sage: L.series(4) # takes a long time (several
seconds)
> - (O(3))*alpha + (O(3^2)) + ((O(3^-1))*alpha + (2*3^-1 +
O(3^0)))*T + ((O(3^-1))*alpha + (2*3^-1 + O(3^0)))*T^2 + O(T^5)
> + (O(3^2))*alpha + (O(3^3)) + ((O(3^-1))*alpha + (2*3^-1 +
O(3^0)))*T + ((O(3^-1))*alpha + (2*3^-1 + O(3^0)))*T^2 + O(T^5)
> }}}
> The precision should only go down by this change.
I put a comment in the last commit which clarifies what is happening here.
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Ticket URL: <http://trac.sagemath.org/ticket/13662#comment:19>
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