Difference between revisions of "Factorial"
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(Created page with "Let $n$ be an integer. Then the factorial of $n$, written $n!$, is the integer $$n!=n(n-1)(n-2)\ldots 3 \cdot 2 \cdot 1.$$") |
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Let $n$ be an integer. Then the factorial of $n$, written $n!$, is the integer | Let $n$ be an integer. Then the factorial of $n$, written $n!$, is the integer | ||
$$n!=n(n-1)(n-2)\ldots 3 \cdot 2 \cdot 1.$$ | $$n!=n(n-1)(n-2)\ldots 3 \cdot 2 \cdot 1.$$ | ||
| + | The most common way to interpolate this function to allow complex inputs is via the [[gamma function]]. | ||
Revision as of 15:20, 14 October 2014
Let $n$ be an integer. Then the factorial of $n$, written $n!$, is the integer $$n!=n(n-1)(n-2)\ldots 3 \cdot 2 \cdot 1.$$ The most common way to interpolate this function to allow complex inputs is via the gamma function.
