Results 61 to 70 of about 1,005 (113)

On generating matrices of the k-Pell, k-Pell-Lucas and modified k-Pell sequences

open access: yes, 2014
In this paper we define some tridiagonal matrices depending of a parameter from which we will find the k-Pell, k-Pell-Lucas and Modified k-Pell numbers. Mathematics Subject Classification: 11B37, 11B83.
P. Catarino
semanticscholar   +1 more source

Logarithmically complete monotonicity of a function related to the Catalan-Qi function

open access: yesActa Universitatis Sapientiae: Mathematica, 2016
In the paper, the authors find necessary and sufficient conditions such that a function related to the Catalan-Qi function, which is an alternative generalization of the Catalan numbers, is logarithmically complete monotonic.
Qi Feng, Guo Bai -Ni
doaj   +1 more source

Irrational numbers associated to sequences without geometric progressions [PDF]

open access: yes, 2013
Let s and k be integers with s \geq 2 and k \geq 2. Let g_k^{(s)}(n) denote the cardinality of the largest subset of the set {1,2,..., n} that contains no geometric progression of length k whose common ratio is a power of s.
Nathanson, Melvyn B., O'Bryant, Kevin
core  

Generalizations of the Bell Numbers and Polynomials and Their Properties

open access: yes, 2017
In the paper, the authors present unified generalizations for the Bell numbers and polynomials, establish explicit formulas and inversion formulas for these generalizations in terms of the Stirling numbers of the first and second kinds with the help of ...
Feng Qi (祁锋)   +3 more
semanticscholar   +1 more source

Modular forms, hypergeometric functions and congruences

open access: yes, 2013
Using the theory of Stienstra and Beukers, we prove various elementary congruences for the numbers \sum \binom{2i_1}{i_1}^2\binom{2i_2}{i_2}^2...\binom{2i_k}{i_k}^2, where k,n \in N, and the summation is over the integers i_1, i_2, ...i_k >= 0 such that ...
Kazalicki, M.
core   +2 more sources

The log-convexity of the poly-Cauchy numbers

open access: yes, 2016
In 2013, Komatsu introduced the poly-Cauchy numbers, which generalize Cauchy numbers. Several generalizations of poly-Cauchy numbers have been considered since then. One particular type of generalizations is that of multiparameter-poly-Cauchy numbers. In
Komatsu, Takao, Zhao, Feng-Zhen
core   +1 more source

Enumerating the rationals from left to right

open access: yes, 2010
Farey sequences, Stern-Brocot sequences, the Calkin-Wilf sequences are shown to be generated via almost identical second order recurrence relations.
Glasby, S. P.
core   +1 more source

On the number of outer connected dominating sets of graphs

open access: yes, 2012
Let $G=(V,E)$ be a simple graph. A set $S\subseteq V(G)$ is called an outer-connected dominating set (or ocd-set) of $G$, if $S$ is a dominating set of $G$ and either $S=V(G)$ or $V\backslash S$ is a connected graph.
Akhbari, Mohammad H.   +2 more
core  

Generalised Binomial coefficients and Jarden's Theorem [PDF]

open access: yes, 2013
We prove a stronger version of Jarden's Theorem for recurrence of powers of recursive functionsComment: A section (section 3) concerning the application of Jarden's Theorem is ...
Cheng Lien, Lang, Mong Lung Lang
core  

Asymptotic approximations of Apostol-Frobenius-Euler polynomials of order α in terms of hyperbolic functions

open access: yesDemonstratio Mathematica
The study of special functions has become an enthralling area in mathematics because of its properties and wide range of applications that are relevant into other fields of knowledge.
Corcino Cristina B.   +2 more
doaj   +1 more source

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