Results 21 to 30 of about 5,218,588 (299)

Construction of Difference Sets from Unions of Cyclotomic Classes of Order N=14

open access: yesRecoletos Multidisciplinary Research Journal, 2022
Let G be an additive group of order v, D be a non-empty proper k-subset of G, and λ be any integer. Then D is a (v, k, λ) - difference set if every nonzero element of the group can be expressed as a difference d1 - d2 of elements of D in exactly
Benedict Estrella
doaj   +1 more source

A Note on Difference Sets

open access: yesJournal of Combinatorial Theory, Series A, 1998
Let \(G\) be a group not necessary abelian, and \(N\) a normal subgroup of \( G\). Suppose there is a \((v,k,\lambda)\)-DS in \(G\). Bounds on \(| N| \) and \(\lambda\) are given in terms mainly of \(k-\lambda\) under (strong) assumptions on the structure and the order of \(G/N\) using group rings.
Hikoe Enomoto   +2 more
openaire   +2 more sources

Supplementary difference sets and optimal designs [PDF]

open access: yes, 1991
D-optimal designs of order n = 2 v ≡ 2 (mod 4), where q is a prime power and v = q2 + q + 1 are constructed using two methods, one with supplementary difference sets and the other using projective planes more directly.An infinite family of Hadamard ...
Kounias, Stratis   +5 more
core   +1 more source

A class of symmetric difference-closed sets related to commuting involutions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2017
To appear in Volume 19 of DMTCS.
John Campbell
doaj   +1 more source

Neutrosophic Sets and Systems [PDF]

open access: yes, 2013
Neutrosophic Sets and Systems has been created for publications on advanced studies in neutrosophy, neutrosophic set, neutrosophic logic, neutrosophic probability, neutrosophic statistics that started in 1995 and their applications in any field, such as ...
Smarandache, Florentin (Editor-in-Chief)
core   +1 more source

New lower bounds for cardinalities of higher dimensional difference sets and sumsets

open access: yesDiscrete Analysis, 2022
New lower bounds for cardinalities of higher dimensional difference sets and sumsets, Discrete Analysis 2022:15, 19 pp. Let $A$ be a finite subset of an Abelian group $G$.
Akshat Mudgal
doaj   +1 more source

Difference Equations and Julia Sets of Several Functions for Degenerate q-Sigmoid Polynomials

open access: yesFractal and Fractional, 2023
In this article, we construct a new type of degenerate q-sigmoid (DQS) polynomial for sigmoid functions containing quantum numbers and find several difference equations related to it.
Jung-Yoog Kang, Cheon-Seoung Ryoo
doaj   +1 more source

The difference vectors for convex sets and a resolution of the geometry conjecture

open access: yesOpen Journal of Mathematical Optimization, 2021
The geometry conjecture, which was posed nearly a quarter of a century ago, states that the fixed point set of the composition of projectors onto nonempty closed convex sets in Hilbert space is actually equal to the intersection of certain translations ...
Alwadani, Salihah   +3 more
doaj   +1 more source

More Optimal Difference Systems of Sets and Frequency-Hopping Sequences From Zero-Difference Functions

open access: yesIEEE Access, 2019
Difference systems of sets (DSS) and frequency-hopping sequences (FHS) are two objects with many applications in wireless communication. Zero-difference balanced function (ZDBF) and near zero-difference balanced functions (NZDBF) are two types of ...
Zongxiang Yi, Chunming Tang
doaj   +1 more source

Circulants and Difference Sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
Let F F be any field,
openaire   +2 more sources

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