Results 21 to 30 of about 18,831 (324)

Some Results On Quaternion 3-Space

open access: yesCumhuriyet Science Journal, 2018
In this paper, the set J′=H(Q₄,Jγ) of 4 by 4 matrices, withentries in a quaternion F-algebra Q, that are symmetric with respect to thecanonical involution Jγ is studied.
Atilla Akpınar, Fatma Özen Erdoğan
doaj   +1 more source

On quaternionic functional analysis [PDF]

open access: yes, 2006
In this article, we will show that the category of quaternion vector spaces, the category of (both one-sided and two sided) quaternion Hilbert spaces and the category of quaternion $B^*$-algebras are equivalent to the category of real vector spaces, the ...
Agrawal   +17 more
core   +2 more sources

Blocks with quaternion defect group over a 2-adic ring: the case \tilde{A}_4 [PDF]

open access: yes, 2007
Except for blocks with a cyclic or Klein four defect group, it is not known in general whether the Morita equivalence class of a block algebra over a field of prime characteristic determines that of the corresponding block algebra over a p-adic ring.
Broué   +6 more
core   +1 more source

C. S. Peirce and the Square Root of Minus One: Quaternions and a Complex Approach to Classes of Signs and Categorical Degeneration [PDF]

open access: yes, 2017
The beginning for C. S. Peirce was the reduction of the traditional categories in a list composed of a fundamental triad: quality, respect and representation.
Venancio, Rafael Duarte Oliveira
core   +1 more source

Generalized Quaternions and Matrix Algebra

open access: yesAfyon Kocatepe University Journal of Sciences and Engineering, 2023
In this paper, we established the connection between generalized quaternion algebra and real (complex) matrix algebras by using Hamilton operators. We obtained real and complex matrices corresponding to the real and complex basis of the generalized quaternions. Also, we investigated the basis features of real and complex matrices. We get Pauli matrices
Erhan ATA, Ümit Ziya SAVCI
openaire   +3 more sources

A Convolution Theorem Related to Quaternion Linear Canonical Transform

open access: yesAbstract and Applied Analysis, 2019
We introduce the two-dimensional quaternion linear canonical transform (QLCT), which is a generalization of the classical linear canonical transform (LCT) in quaternion algebra setting. Based on the definition of quaternion convolution in the QLCT domain
Mawardi Bahri, Ryuichi Ashino
doaj   +1 more source

Enabling quaternion derivatives: the generalized HR calculus [PDF]

open access: yesRoyal Society Open Science, 2015
Quaternion derivatives exist only for a very restricted class of analytic (regular) functions; however, in many applications, functions of interest are real-valued and hence not analytic, a typical case being the standard real mean square error objective
Dongpo Xu   +3 more
doaj   +1 more source

Predicting Rigid Body Dynamics Using Dual Quaternion Recurrent Neural Networks With Quaternion Attention

open access: yesIEEE Access, 2022
We propose a novel neural network architecture based on dual quaternions which allow for a compact representation of information with a main focus on describing rigid body movements.
Johannes Poppelbaum, Andreas Schwung
doaj   +1 more source

Roots of unity in definite quaternion orders

open access: yes, 2014
A commutative order in a quaternion algebra is called selective if it is embeds into some, but not all, the maximal orders in the algebra. It is known that a given quadratic order over a number field can be selective in at most one indefinite quaternion ...
Arenas-Carmona, Luis
core   +2 more sources

Hopf algebra structures on generalized quaternion algebras

open access: yesElectronic Research Archive
In this paper, we use elementary linear algebra methods to explore possible Hopf algebra structures within the generalized quaternion algebra. The sufficient and necessary conditions that make the generalized quaternion algebra a Hopf algebra are given ...
Quanguo Chen , Yong Deng
doaj   +1 more source

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