#15673: major improvements to lazy power series
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Reporter: mhansen | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-7.0
Component: combinatorics | Resolution:
Keywords: LazyPowerSeries,, | Merged in:
days57 | Reviewers: Ralf Stephan,
Authors: Mike Hansen | Matthieu Dien
Report Upstream: N/A | Work issues:
Branch: u/mantepse/15673 | Commit:
Dependencies: | aa8fd83522eaeb583da0caa5c6628ddd1ed36b04
| Stopgaps:
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Comment (by mantepse):
Replying to [comment:49 chapoton]:
> There is a bad {{{INPUT::}}} that should be replaced by {{{INPUT:}}}
>
> and doc does not build, see patchbot report
Thanks, I changed this locally. However, I will not take care of the
documentation at the moment, because I'm currently (really!) working on
the design.
Right now I think that I want a class {{{CoefficientStream}}} to model the
algebraic structure of the sequence of coefficients of a formal power
series with coefficients in a ring, i.e., inheriting from
{{{ModuleElement}}}.
I am not yet sure whether the computation of the approximate order really
belongs here: after all, we want to recursively specify formal power
series, not coefficient streams. The design decision is not completely
clear, because formal power series and coefficient streams are almost the
same thing - except that most operations feel more natural on the level of
formal power series.
Suggestions and comments very welcome!
--
Ticket URL: <http://trac.sagemath.org/ticket/15673#comment:50>
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