#9706: Symbolic Chebyshev polynomials
-------------------------------------+-------------------------------------
Reporter: maldun | Owner: burcin, maldun
Type: enhancement | Status: needs_work
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
Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by jdemeyer):
I think `mpmath` should only be used for the "pure" `RealField()` and
`ComplexField()` and `RDF` and `CDF`, nothing else.
This is bad:
{{{
sage: chebyshev_T(5,Qp(3)(2))
...
TypeError: unable to coerce to a ComplexNumber: <type
'sage.rings.padics.padic_capped_relative_element.pAdicCappedRelativeElement'>
}}}
and the way you use `RIF` is also kind of stupid since the computation
should really be done using the recursive formula.
--
Ticket URL: <http://trac.sagemath.org/ticket/9706#comment:89>
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