#9457: power series comparison should use padded_list
-------------------------------------+-------------------------------------
Reporter: niles | Owner: malb
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.1
Component: commutative | Resolution:
algebra | Merged in:
Keywords: | Reviewers:
Authors: niles | Work issues: resolve problems with
Report Upstream: N/A | sha_tate.py
Branch: | Commit:
u/niles/ticket/9457 | 83d1220d288e46df6e3e933a79faa4fc064ccefa
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by niles):
* commit: => 83d1220d288e46df6e3e933a79faa4fc064ccefa
* branch: => u/niles/ticket/9457
Old description:
> Comparison of power series uses list instead of padded_list; this means
> that power series equality can fail:
>
> {{{
> 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, False, True, False, True, False, True]
> sage: g.add_bigoh(3).list()
> [0, 1]
> sage: g.add_bigoh(3).padded_list()
> [0, 1, 0]
> }}}
>
> == Apply ==
>
> * [attachment: trac_9457_power_series_eq_rebase.patch]
New description:
Comparison of power series uses list instead of padded_list; this means
that power series equality can fail:
{{{
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, False, True, False, True, False, True]
sage: g.add_bigoh(3).list()
[0, 1]
sage: g.add_bigoh(3).padded_list()
[0, 1, 0]
}}}
== Apply ==
* [attachment:trac_9457_power_series_eq_rebase.patch]
--
Comment:
Last 10 new commits:
||[[http://git.sagemath.org/sage.git/commit/?id=83d1220|83d1220]]||{{{rebase
to 6.0 and #12555}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=aa65f59|aa65f59]]||{{{Removed
removed file from doc.}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=f338b7f|f338b7f]]||{{{Fix
wrong NOTE block.}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=fcf6ad2|fcf6ad2]]||{{{Fix
for comparison of padics.}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=5f00813|5f00813]]||{{{Fixes
for "sage not defined".}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=89ef12d|89ef12d]]||{{{Merge
remote-tracking branch 'origin/develop' into ticket/12555}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=0e7c964|0e7c964]]||{{{Fixed
failing doctest (likely due to #15422).}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=7d7ff1f|7d7ff1f]]||{{{Merge
branch 'master' into public/padics/templates-12555}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=4b633ab|4b633ab]]||{{{Fixes
for some missing/duplicated chunks.}}}||
||[[http://git.sagemath.org/sage.git/commit/?id=66e5746|66e5746]]||{{{From
Trac patches: trac_12555-pdf_fix-ts.patch.}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/9457#comment:21>
Sage <http://www.sagemath.org>
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and MATLAB
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