Talk:Polygamma function

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Particular values[edit]

A list of particular values would be useful. It seems that for example, where is the Euler–Mascheroni constant. PAR (talk) 00:49, 27 May 2011 (UTC)

Colours in graphs[edit]

The article includes six graphs of the (poly)gamma function, very attractively coloured throughout a rectangular region of the complex plane. However, there is absolutely no explanation of the colours used! What do they mean?

Note that the digamma function page has a similar problem. yoyo (talk) 05:09, 27 June 2015 (UTC)

See color wheel graphs of complex functions. Double sharp (talk) 09:31, 24 September 2015 (UTC)