Results 11 to 20 of about 2,375 (206)

The 2-adic valuations of Stirling numbers of the second kind [PDF]

open access: greenInternational Journal of Number Theory, 2009
In this paper, we investigate the 2-adic valuations of the Stirling numbers S(n, k) of the second kind. We show that v2(S(4i, 5)) = v2(S(4i + 3, 5)) if and only if i ≢ 7 (mod 32). This confirms a conjecture of Amdeberhan, Manna and Moll raised in 2008. We show also that v2(S(2n+ 1, k + 1)) = s2(n) - 1 for any positive integer n, where s2(n) is the sum ...
Shaofang Hong, Jianrong Zhao, Wei Zhao
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Computing a family of probabilistic numbers in terms of probabilistic Stirling numbers of the second kind

open access: diamondApplied Mathematics in Science and Engineering
In this paper, we introduce the probabilistic Bernoulli numbers, Cauchy numbers, and Euler numbers of order α associated with the random variable Y, utilizing the generating function approach.
Aimin Xu
doaj   +2 more sources

On 2-Adic Orders of Stirling Numbers of the Second Kind [PDF]

open access: green, 2005
We prove that for any k = 1,... , 2n the 2-adic order of the Stirling number S(2n, k) of the second kind is exactly d(k) − 1, where d(k) denotes the number of 1’s among the binary digits of k. This confirms a conjecture of Lengyel.
Stefan De Wannemacker
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Multisectioned moments of stirling numbers of the second kind

open access: bronzeJournal of Combinatorial Theory, Series A, 1973
The Stirling number of the second kind, S(n, k), enumerates the ways that n distinct objects can be stored in k non-empty indistinguishable boxes. When k is restricted to a given residue class modulo μ, the moments of the distribution S(n, k) have properties associated with the Olivier functions of order μ evaluated at 1 and −1. The simplest example is
D. H. Lehmer
openalex   +3 more sources

Strong Asymptotics of the Generating Polynomials of the Stirling Numbers of the Second Kind

open access: bronzeJournal of Approximation Theory, 2001
Let \(Q_n(z) = \sum_{k=1}^n S(n,k) (nz)^k,\) where \(S(n,k)\) is the Stirling number of the second kind. The author proves an asymptotic formula for \(Q_n(z)\) with \(z \in {\mathbf C}\backslash[-e,0]\) and proves an Airy-asymptotic formula for \(Q_n\) as \(z \to -e\).
Christian Elbert
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Some results on p-adic valuations of Stirling numbers of the second kind

open access: goldAIMS Mathematics, 2020
Let $n$ and $k$ be nonnegative integers. The Stirling number of the second kind, denoted by $S(n, k)$, is defined as the number of ways to partition a set of $n$ elements into exactly $k$ nonempty subsets and we have $$ S(n, k)=\frac{1}{k!}\sum_{i=0}^{k}(
Yulu Feng, Min Qiu
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On the asymptotic normality of the Legendre–Stirling numbers of the second kind

open access: bronzeEuropean Journal of Combinatorics, 2015
For the Legendre-Stirling numbers of the second kind asymptotic formulae are derived in terms of a local central limit theorem. Thereby, supplements of the recently published asymptotic analysis of the Chebyshev-Stirling numbers are established. Moreover, we provide results on the asymptotic normality and unimodality for modified Legendre-Stirling ...
Wolfgang Gawronski   +2 more
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Multi-Stirling numbers of the second kind

open access: goldFilomat
The multi-Stirling numbers of the second kind, the unsigned multi-Stirling numbers of the first kind, the multi-Lah numbers and the multi-Bernoulli numbers are all defined with the help of the multiple logarithm, and generalize respectively the Stirling numbers of the second kind, the unsigned Stirling numbers of the first kind, the unsigned Lah ...
Taekyun Kim, Dae San Kim, Hye Jin Kim
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