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A new operation on soft sets: extended symmetric difference of soft sets [PDF]

open access: yesVojnotehnički Glasnik, 2021
Introduction/purpose: Molodtsov introduced the concept of soft sets as a new mathematical tool for dealing with problems containing uncertainties.
Nenad S. Stojanović
doaj   +1 more source

An Existing Problem for Symmetric Design: Bruck Ryser Chowla Theorem

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Symetric designs are interesting objects of combinatorics, and have some relations with coding theory, difference sets, geometry and finite group theory. They have applications on statistics and design experiments.
Emek Demirci Akarsu, Safiye Öztürk
doaj   +1 more source

Almost Difference Sets From Singer Type Golomb Rulers

open access: yesIEEE 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
doaj   +1 more source

Multivariate polynomial values in difference sets

open access: yesDiscrete Analysis, 2021
Multivariate polynomial values in difference sets, Discrete Analysis 2021:11, 46 pp. A well known theorem of Furstenberg and Sárközy states that every dense set of integers must contain two elements that differ by a perfect square.
John R. Doyle, Alex Rice
doaj   +1 more source

Image Sharpening Detection Based on Difference Sets

open access: yesIEEE Access, 2020
Image sharpening is one of the basic operations used to improve the visual effect of images. Image editing makes it impossible to confirm the authenticity of an image, and the purpose of image forensics is to detect whether an image has been artificially
Dongping Wang, Tiegang Gao, Yuan Zhang
doaj   +1 more source

Almost Difference Set Pairs and Ideal Three-Level Correlation Binary Sequence Pairs

open access: yesIEEE 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
doaj   +1 more source

Bipolar Hypersoft Sets

open access: yesMathematics, 2021
Hypersoft set theory is an extension of soft set theory and is a new mathematical tool for dealing with fuzzy problems; however, it still suffers from the parametric tools’ inadequacies.
Sagvan Y. Musa, Baravan A. Asaad
doaj   +1 more source

Some relations between the sets of f-statistically convergent difference sequences

open access: yesActa Scientiarum: Technology, 2023
In this study we establish the relations between the sets of difference sequences which are statistically convergent in connection with modulus functions.
Sarkawt Asaad   +2 more
doaj   +1 more source

On Difference Sets [PDF]

open access: yesProceedings of the National Academy of Sciences, 1949
Not ...
openaire   +4 more sources

Signed difference sets

open access: yesDesigns, Codes and Cryptography, 2023
A $(v,k,λ)$ difference set in a group $G$ of order $v$ is a subset $\{d_1, d_2, \ldots,d_k\}$ of $G$ such that $D=\sum d_i$ in the group ring $\mathbb{Z}[G]$ satisfies $$D D^{-1} = n + λG,$$ where $n=k-λ$. If $D=\sum s_i d_i$, where the $s_i \in \{ \pm 1\}$, satisfies the same equation, we will call it a signed difference set.
openaire   +3 more sources

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