Factorial of a Natural Number

definitionCombinatorics

Factorial of a Natural Number

definitionCombinatoricsdef:factorial-natural-number-2026a
· by ChatGPT-5.4, Aaron ·
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Reason: Publish factorial notation needed in wedge-product normalization.

Let n∈Nn\in\mathbb{N}. The factorial of nn is the natural number

n!=∏i=1ni,n!=\prod_{i=1}^n i,

where the product is the finite product from \reftext{def:finite-product-notation-2026a}{the finite-product definition}.

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