Results 11 to 20 of about 240,116 (294)

Characteristic of Quaternion Algebra Over Fields [PDF]

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2023
Quaternion is an extension of the complex number system. Quaternion are discovered by formulating 4 points in 4-dimensional vector space using the cross product between two standard vectors. Quaternion algebra over a field is a 4-dimensional vector space
Muhammad Faldiyan   +2 more
doaj   +2 more sources

RSVD for Three Quaternion Tensors with Applications in Color Video Watermark Processing

open access: yesAxioms, 2023
In this paper, we study the restricted singular-value decomposition (RSVD) for three quaternion tensors under the Einstein product, and give higher-order RSVD over the quaternion algebra, which can achieve simultaneous singular value decomposition of ...
Wen-Juan Chen, Shao-Wen Yu
doaj   +2 more sources

A novel color images security-based on SPN over the residue classes of quaternion integers $$\:\varvec{H}{\left(\mathbb{Z}\right)}_{\varvec{\pi\:}}$$ [PDF]

open access: yesScientific Reports
The exponential growth of multimedia data transmission has intensified the demand for advanced image encryption systems capable of resisting contemporary cryptanalytic attacks while maintaining computational efficiency.
Muhammad Sajjad, Nawaf A. Alqwaifly
doaj   +2 more sources

Quaternion group algebra and representations of the quaternions [PDF]

open access: yesCommunications in Algebra, 2019
AbstractIn this paper, we provide a concrete and explicit decomposition of the quaternion group algebra through a suitable basis of the algebra.
exaly   +2 more sources

Free groups in quaternion algebras

open access: yesJournal of Algebra, 2013
10 pages, article presented in conferences: Algebra School, Brasilia-Brazil, Brasilia National University (july-2010); Summer 2009 Meeting of CMS in Groups and Hopf Algebras section, St. Jonh's-Canada, Memorial University of Newfoundland (June-2009); Groups, Rings and Group Rings, Ubatuba-Brazil (july-2008)
Juriaans, S.O., Souza Filho, A.C.
openaire   +3 more sources

Endotrivial modules over groups with quaternion or semi-dihedral Sylow 2-subgroup. [PDF]

open access: yes, 2013
Let G be a finite group with a Sylow 2-subgroup P which is either quaternion or semi-dihedral. Let k be an algebraically closed field of characteristic 2.
Mazza, Nadia   +2 more
core   +4 more sources

Quaternion and Split Quaternion Neural Networks for Low-Light Color Image Enhancement

open access: yesIEEE Access, 2023
In this study, two models of multilayer quaternionic feedforward neural networks are presented. Whereas the first model is based on quaternion algebra, the second model uses split quaternion algebra.
Eduardo Jesus De Davila-Meza   +1 more
doaj   +1 more source

One-dimensional quaternion Laplace transform: Properties and its application to quaternion-valued differential equations

open access: yesPartial Differential Equations in Applied Mathematics, 2023
This paper is devoted to the study of the quaternion Laplace transform, which is a natural generalization of the classical Laplace transform using the quaternion algebra. We find that some of its properties such as derivative, convolution and correlation
Muhammad Afdal Bau   +4 more
doaj   +1 more source

On extending the ADMM algorithm to the quaternion algebra setting [PDF]

open access: yes, 2021
Many image and signal processing problems benefit from quaternion based models, due to their property of processing different features simultaneously.
De Bie, HendrikTW060020000664408010020445350000-0003-3806-7836F7EBB716-F0ED-11E1-A9DE-61C894A0A6B4   +4 more
core   +2 more sources

Existence of Split Property in Quaternion Algebra Over Composite of Quadratic Fields

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2023
Quaternions are extensions of complex numbers that are four-dimensional objects. Quaternion consists of one real number and three complex numbers, commonly denoted by the standard vectors  and .
Muhammad Faldiyan   +2 more
doaj   +1 more source

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