Results 21 to 30 of about 165,625 (255)

The Series of Reciprocals of Non-central Binomial Coefficients

open access: yesAmerican Journal of Computational Mathematics, 2013
Utilizing Gamma-Beta function, we can build one series involving reciprocal of non-central binomial coefficients, then We can structure several new series of reciprocals of non-central binomial coefficients by item splitting, these new created denominator of series contain 1 to 4 odd factors of binomial coefficients.
Laiping Zhang, Wanhui Ji
openaire   +4 more sources

Dirichlet series and series with Stirling numbers

open access: yesCubo, 2023
This paper presents a number of identities for Dirichlet series and series with Stirling numbers of the first kind. As coefficients for the Dirichlet series we use Cauchy numbers of the first and second kinds, hyperharmonic numbers, derangement numbers ...
Khristo Boyadzhiev
doaj   +1 more source

Problems for combinatorial numbers satisfying a class of triangular arrays

open access: yesLietuvos Matematikos Rinkinys, 2023
Numbers satisfying a class of triangular arrays, defined by a bivariate first-order linear difference equation with linear coefficients, include a wide range of combinatorial numbers: binomial coefficients, Morgan numbers, Stirling numbers of the first ...
Igoris Belovas
doaj   +3 more sources

Divisibility of the central binomial coefficient $\binom {2n}{n}$ [PDF]

open access: yesTransactions of the American Mathematical Society, 2020
We show that for every fixed $\ell\in\mathbb{N}$, the set of $n$ with $n^\ell|\binom{2n}{n}$ has a positive asymptotic density $c_\ell$, and we give an asymptotic formula for $c_\ell$ as $\ell\to \infty$. We also show that $\# \{n\le x, (n,\binom{2n}{n})=1 \} \sim cx/\log x$ for some constant $c$.
Ford, Kevin, Konyagin, Sergei
openaire   +2 more sources

Sums of Pell/Lucas Polynomials and Fibonacci/Lucas Numbers

open access: yesMathematics, 2022
Seven infinite series involving two free variables and central binomial coefficients (in denominators) are explicitly evaluated in closed form. Several identities regarding Pell/Lucas polynomials and Fibonacci/Lucas numbers are presented as consequences.
Dongwei Guo, Wenchang Chu
doaj   +1 more source

Some Families of Apéry-Like Fibonacci and Lucas Series

open access: yesMathematics, 2021
In this paper, the authors investigate two special families of series involving the reciprocal central binomial coefficients and Lucas numbers. Connections with several familiar sums representing the integer-valued Riemann zeta function are also pointed ...
Robert Frontczak   +2 more
doaj   +1 more source

Moments of the Negative Multinomial Distribution

open access: yesMathematical and Computational Applications, 2023
The negative multinomial distribution appears in many areas of applications such as polarimetric image processing and the analysis of longitudinal count data.
Frédéric Ouimet
doaj   +1 more source

Delannoy numbers and Legendre polytopes [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We construct an $n$-dimensional polytope whose boundary complex is compressed and whose face numbers for any pulling triangulation are the coefficients of the powers of $(x-1)/2$ in the $n$-th Legendre polynomial.
Gábor Hetyei
doaj   +1 more source

Norovirus and rotavirus in surface, malacoculture, and human consumption water in Santa Catarina State, Brazil

open access: yesJournal of Water and Health, 2023
This study evaluated the results recorded at the Central Public Health Laboratory of Santa Catarina state (Brazil) concerning the investigation of Rotavirus (RVA) and Norovirus (NoVs) – genogroups GI and GII. Samples were taken from seawater, river water,
Andreza Mortari   +6 more
doaj   +1 more source

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