#17192: Update Laguerre poly to add errors
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Reporter: kcrisman | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: calculus | Resolution:
Keywords: beginner | Merged in:
Authors: Sergey Bykov | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/captaintrunky/update_laguerre_poly_to_add_errors|
c4ce920fca5f1394eab6e507445b20f9244024af
Dependencies: | Stopgaps:
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Comment (by captaintrunky):
Replying to [comment:4 rws]:
> You disallow Legendre `P(n,m,x)` with negative `n`, but this is too
restrictive, see
> {{{
> sage: pari.pollegendre(-3,x)
> 3/2*x^2 - 1/2
> }}}
> the implementation in ticket #17151, and http://dlmf.nist.gov/14.9#E3
Does it mean that docs are inconsistent for these functions: legendre_P,
legendre_Q, gen_legendre_P, gen_Legendre_Q? All of them have the
constraint:
{{{
Returns the generalized (or associated) Legendre function of the second
kind for integers `n>-1`, `m>-1`.
}}}
or something similar.
--
Ticket URL: <http://trac.sagemath.org/ticket/17192#comment:6>
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