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Everything about Gamma function

Extension of the factorial function

In mathematics, the gamma function, denoted by ⁠⁠, is the most common extension of the factorial function to complex numbers. First studied by Daniel Bernoulli, the gamma function is defined for all complex numbers except non-positive integers, and satisfies for every positive integer ⁠⁠. The gamma function can be defined via a convergent improper integral for complex numbers with positive real part: The gamma function then is defined in the complex plane as the analytic continuation of this integral function: it is a meromorphic function which is holomorphic except at zero and the negative integers, where it has simple poles. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Gamma functionA 5-minute orientation
  2. Skim a recent paper: On the Barnes double gamma functionInfluential work since 2022
  3. Pick up a classic book: Tables of the incomplete Þ-functionThe most-reprinted book on the subject
  4. Read the landmark paper: Note on the Gamma FunctionCited 141 times
  5. Go sideways: Reciprocal gamma functionA closely related topic
  6. Go sideways: Particular values of the gamma functionA closely related topic

📖 Definitions

Noun A meromorphic function which generalizes the notion of factorial to complex numbers and has singularities at the nonpositive integers; any of certain generalizations or analogues of said function, such as extend the factorial to domains other than the complex numbers.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics