gamma function

(30 minutes to learn)

Summary

The gamma function is a generalization of factorials to real and complex numbers, e.g. 5.25! isn't well defined, but Gamma(5.25) is well defined. The Gamma function is formally defined as an improper integral that converges. It appears in a number of common distributions, e.g. the beta, gamma, and Dirichlet distribution.

Context

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Core resources (read/watch one of the following)

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Supplemental resources (the following are optional, but you may find them useful)

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Wolfram MathWorld

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See also