#9457: power series comparison should use padded_list
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Reporter: niles | Owner: malb
Type: defect | Status: needs_review
Priority: minor | Milestone: sage-4.5
Component: commutative algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by niles):
Replying to [comment:4 niles]: Code in the previous description made no
sense; my apologies. Here's what we have after applying the patch:
{{{
sage: A.<t> = PowerSeriesRing(ZZ)
sage: g = t + t^3 + t^5 + O(t^6); g
t + t^3 + t^5 + O(t^6)
sage: [g == g.add_bigoh(i) for i in range(7)]
[True, True, True, True, True, True, True]
sage: f = t + t^2 + O(t^10)
sage: f == f.truncate()
True
sage: f.padded_list()
[0, 1, 1, 0, 0, 0, 0, 0, 0, 0]
sage: f.padded_list(infinity)
[0, 1, 1]
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9457#comment:5>
Sage <http://www.sagemath.org>
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