#7644: generic power series reversion
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Reporter: was | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.6.1
Component: algebra | Keywords: lagrange, reversion
Author: Niles Johnson | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by niles):
Replying to [comment:12 drkirkby]:
> Is it sensible to remove the first 3 patches - if so, I can do so, as I
have admin rights.
Sure; thanks :)
>
> Have all the results been verified by independent means? If so, it would
be useful to state how. If not, then I personally don't agree with such
"tests", but as a minimum it should be documented if the results have not
been verified.
The verifications are performed by checking that `f(g)` and `g(f)` both
return `x + O(x^prec)`. Actually just one of these is necessary to
determine the reversion of f, so I view this as two different methods for
verifying the answer.
>
> As for the actual maths, I can't review that - this is well outside my
level of maths, since none of my degrees are in maths
Thanks for checking into it :)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7644#comment:13>
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