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variants of this functions

Mathematica Notation

Traditional Notation

Gamma, Beta, Erf > PolyGamma[nu,z] > Series representations

Generalized power series (32 formulas)

>   Expansions at generic point z==z0 (5 formulas)
>   Expansions on branch cuts (4 formulas)
>   Expansions at z==0 (11 formulas)
>   Expansions at z==-m (8 formulas)
>   Expansions of psi(nu)(-m+Epsilon) at Epsilon==0 (4 formulas)