#19997: advanced symbolic series of Order any expression
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Reporter: dkrenn | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.1
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by dkrenn):
Replying to [comment:1 rws]:
> The substitution is fine. To support other than power series would be a
major enhancement.
I'm not sure if I understand your comment. What I see (as someone having
only little idea how power series are done in SR) is that in
{{{
sage: a = 1 + x/2 - x^2/8 + (x^3).Order()
sage: a
-1/8*x^2 + 1/2*x + Order(x^3) + 1
sage: a.subs(x=1/x)
1/2/x - 1/8/x^2 + Order(x^(-3)) + 1
}}}
substitution works (somehow at least), but in the example stated in the
ticket not, the O-Term disappears.
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Ticket URL: <http://trac.sagemath.org/ticket/19997#comment:2>
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