An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Stirling's approximation
  نزدینش ِ استرلینگ  
nazdineš-e Stirling
Fr.: approximation de Stirling  

A mathematical formula yielding an approximate value for → factorial n, when n is large: n! ≅ (2πn)1/2nne-n, where e is the base of → natural logarithm.

See also: Named after James Stirling (1692-1770), a Scottish mathematician; → approximation.