#17151: symbolic Laguerre / associated Laguerre polynomials
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Reporter: rws | Owner:
Type: | Status: new
enhancement | Milestone: sage-6.4
Priority: major | Keywords: special, function, holonomic,
Component: symbolics | orthogonal
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Not only is `laguerre(n,x)` not symbolic, a naive implementation is
already 2x as fast at `n=100` and 10x at `n=1000`:
{{{
R.<x> = PolynomialRing(QQ, 'x')
def lag(n):
return R([binomial(n,k)*(-1)^k/factorial(k) for k in xrange(n+1)])
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/17151>
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