Example image of eyePlorer eyePlorer map for 'Stirling's approximation': Factorial Mathematics James Stirling (mathematician) Bernoulli number Euler–Maclaurin formula Integration by parts Natural logarithm Big O notation Wallis product Method of steepest descent Asymptotic expansion Convergent series Srinivasa Ramanujan Gamma function John Canton Royal Society Thomas Bayes Stirling numbers of the first kind Hyperbolic function Taylor series Abraham de Moivre Jacques Philippe Marie Binet Lanczos approximation Spouge's approximation Central binomial coefficient List of theorems Thermodynamic limit Maximum term method Catalan number Poisson limit theorem Asymptotic analysis Difference operator Advantage (cryptography) Hilbert matrix Large numbers Representations of e Gibbs paradox Maxwell–Boltzmann statistics Probabilistic proofs of non-probabilistic theorems List of formulae involving π Canonical ensemble Comparison sort Entropy of mixing Stirling (disambiguation) Beta function Colin Maclaurin Proof that 22/7 exceeds π Boundedly generated group E (mathematical constant) Bose–Einstein statistics