Completely effective error bounds for Stirling Numbers of the first and second kind via Poisson Approximation

Autor: Stephen DeSalvo, Richard Arratia
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Popis: We provide completely effective error estimates for Stirling numbers of the first and second kind, denoted by $s(n,m)$ and $S(n,m)$, respectively. These bounds are useful for values of $m \geq n - O(\sqrt{n})$. An application of our Theorem 5 yields, for example, \[ s(10^{12},\ 10^{12}-2\times 10^6)/10^{35664464} \in [ 1.87669, 1.876982 ], \] \[ S(10^{12},\ 10^{12}-2\times 10^6)/10^{35664463} \in [ 1.30121, 1.306975 ]. \] The bounds are obtained via Chen-Stein Poisson approximation, using an interpretation of Stirling numbers as the number of ways of placing non-attacking rooks on a chess board. As a corollary to Theorem 5, summarized in Proposition 1, we obtain two simple and explicit asymptotic formulas, one for each of $s(n,m)$ and $S(n,m)$, for the parametrization $m = n - t\, n^a$, $0 \leq a \leq \frac{1}{2}.$ These asymptotic formulas agree with the ones originally observed by Moser and Wyman in the range $0
Comment: 19 pages, 4 Figures, 19 References
Databáze: OpenAIRE