Results 1 to 10 of about 10,741,184 (265)
Hadamard Matrices with Cocyclic Core
Mathematics, 2021 Since Horadam and de Launey introduced the cocyclic framework on combinatorial designs in the 1990s, it has revealed itself as a powerful technique for looking for (cocyclic) Hadamard matrices.
Víctor Álvarez +5 more
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Almost Difference Sets From Singer Type Golomb Rulers
IEEE Access, 2022 Let $G$ be an additive group of order $v$ . A $k$ -element subset $D$ of $G$ is called a $(v, k, \lambda, t)$ -almost difference set if the expressions $g-h$ , for $g$ and $h$ in $D$ , represent $t$ of the non-identity elements in $G ...
David Fernando Daza Urbano +2 more
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Some counterexamples to a conjecture on difference graphs
Examples and Counterexamples, 2021 A (v,Γ,λ)difference graph in an additive group G of order v is a copy of an abstract simple graph Γ with vertices in G such that the list of all possible differences between adjacent vertices covers every non-zero element of G exactly λ times.
L. Mella, A. Pasotti
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On the Solutions of a Fourth Order Difference Equation
Universal Journal of Mathematics and Applications, 2021 In this paper, we solve and study the global behavior of the well defined solutions of the difference equation $$x_{n+1}=\frac{x_{n}x_{n-3}}{Ax_{n-2}+Bx_{n-3}}, \quad n=0,1,...,$$ where $A, B>0$ and the initial values $x_{-i}$, $i\in\{0,1,2,3 ...
R Abo-zeıd
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On a Rational $(P+1)$th Order Difference Equation with Quadratic Term
Universal Journal of Mathematics and Applications, 2022 In this paper, we derive the forbidden set and determine the solutions of the difference equation that contains a quadratic term \begin{equation*} x_{n+1}=\frac{x_{n}x_{n-p}}{ax_{n-(p-1)}+bx_{n-p}},\quad n\in\mathbb{N}_0, \end{equation*} where the ...
R Abo-zeıd, Messaoud Berkal
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Efficient Difference and Ratio-Type Imputation Methods under Ranked Set Sampling
Axioms, 2023 It is well known that ranked set sampling (RSS) is more efficient than simple random sampling (SRS). Furthermore, the presence of missing data vitiates the conventional results.
Shashi Bhushan +3 more
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Almost Difference Set Pairs and Ideal Three-Level Correlation Binary Sequence Pairs
IEEE Access, 2020 Almost difference set pairs are used in cryptography and coding theory, and a majority of the acknowledged almost difference set pairs are constructed by Chinese remainder theorem, cyclotomy or interleaving.
Wei Zhao, Yue Wu, Yaya Zhang, Yanguo Jia
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A New Pre-Order Relation for Set Optimization using l-difference
Communications in Advanced Mathematical Sciences, 2021 A new relation on the subset of the space is defined via l-difference in this work. This is a pre-order relation on the family of nonempty sets. Some relations between this pre-order relation and well-known order relations are investigated.
Emrah Karaman
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On Some New Almost Difference Sets Constructed from Cyclotomic Classes of Order 12
Recoletos Multidisciplinary Research Journal, 2023 Almost Difference Sets have extensive applications in coding theory and cryptography. In this study, we introduce new constructions of Almost Difference Sets derived from cyclotomic classes of order 12 in the finite field GF(q), where q is a prime ...
Benedict Estrella
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A set of equations for numerically calculating the interaural level difference in the horizontal plane [PDF]
JASA Express Letters, 2021 The variation of interaural level difference (ILD) with direction and frequency is particularly complex and convoluted. The purpose of this work was to determine a set of parametric equations that can be used to calculate ILDs continuously at any value ...
Michael A. Akeroyd +3 more
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