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Series of LaguerreL problem

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  • Subject: [mg72785] Series of LaguerreL problem
  • From: Arturas Acus <acus at>
  • Date: Fri, 19 Jan 2007 02:09:38 -0500 (EST)

Dear Group,

Using 5.2 version and looking at the help browser on LaguerreL[]
function I see the following line

Series[LaguerreL[n, z], {z, 0, 4}]

SeriesData[z, 0, {LaguerreL[n, 0], -LaguerreL[-1 + n, 1, 0],
LaguerreL[-2 + n, 2, 0]/2, -LaguerreL[-3 + n, 3, 0]/6, LaguerreL[-4 + n,
4, 0]/24}, 0, 5, 1]

Does it have any sense? Certainly, I can call FunctionExpand[] on the

The behaviour of version 5.0 was different and I suspect bug here.

Explanation/motivation or bug confirmation would be wellcome.

Arturas Acus <acus at>

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