PS:
On 2018-12-30, Simon King <[email protected]> wrote:
> It surprises me that .series(x,6) has a pole (after all, LargeSchroeder's
> discontinuity in x=0 seems removable), so perhaps it's a bug, but
> perhaps it's a feature after all --- I cannot tell from the documentation
> if it is intended or not.
Here is another reason why I think it's a bug: The residue of
LargeSchroeder at x=0 is supposed to be the coefficient of x^(-1) in
its Laurent series expansion. However,
sage: LargeSchroeder.residue(x==0)
0
sage: LargeSchroeder.series(x,6).coefficient(x^-1)
-1/2
Best regards,
Simon
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