# Category:Digamma Function

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This category contains results about **Digamma Function**.

Definitions specific to this category can be found in **Definitions/Digamma Function**.

The **digamma function**, $\psi$, is defined, for $z \in \C \setminus \Z_{\le 0}$, by the logarithmic derivative of the gamma function:

- $\map \psi z = \dfrac {\map {\Gamma'} z} {\map \Gamma z}$

where $\Gamma$ is the gamma function, and $\Gamma'$ denotes its derivative.

## Subcategories

This category has the following 5 subcategories, out of 5 total.

## Pages in category "Digamma Function"

The following 12 pages are in this category, out of 12 total.