#9706: Symbolic Chebyshev polynomials
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Reporter: maldun | Owner: burcin, maldun
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-5.13
Component: symbolics | Resolution:
Keywords: orthogonal | Merged in:
polynomials, symbolics | Reviewers: Burcin Erocal, Travis
Authors: Stefan Reiterer, | Scrimshaw, Stefan Reiterer, Jeroen
Travis Scrimshaw | Demeyer
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jdemeyer):
* reviewer: Burcin Erocal, Travis Scrimshaw, Stefan Reiterer => Burcin
Erocal, Travis Scrimshaw, Stefan Reiterer, Jeroen Demeyer
Old description:
> The current implementation of orthogonal polynomials is just a wrapper
> around maxima. (see http://wiki.sagemath.org/symbolics/)
> This update holds the following changes:
>
> * using of the pynac class for symbolic functions.
> * faster evaluation in general
> * evaluation of special values
> * mpmath for numeric evaluation
>
> '''Remarks:'''
> * The current patch needs scipy-0.8. One has to install it before
> testing (see #9808 for spkg's and installation instructions)
> * Some of the old doctests in the old file don't work any more, due to
> coercion problems with pynac (see #9769)
> * Some doctests in Sage change, due to the fact that new BuiltIn
> functions are added. symbolic.random_test.py had output changes since the
> random expression creation changed of course. The tests in pynac.pyx also
> changed, but this has a strange behavior (see below).
>
> Apply:
>
> * [attachment:trac_9706_chebyshev_collection.patch]
New description:
Apply:
* [attachment:trac_9706_chebyshev_collection.patch]
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Ticket URL: <http://trac.sagemath.org/ticket/9706#comment:106>
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