PolyGamma

Polygamma function (SymPy, WMA)

PolyGamma is a meromorphic function on the complex numbers and is defined as a derivative of the logarithm of the gamma function.


PolyGamma[z]

returns the digamma function.

PolyGamma[n,z]

gives the n^(th) derivative of the digamma function.

← Pochhammer
→ StieltjesGamma