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variants of this functions
PolyGamma




Mathematica Notation

Traditional Notation









Gamma, Beta, Erf >PolyGamma[z]





General characteristics (6 formulas)


>   Domain and analyticity (1 formula)
>   Symmetries and periodicities (1 formula)
>   Poles and essential singularities (2 formulas)
>   Branch points (1 formula)
>   Branch cuts (1 formula)