Results 21 to 30 of about 56,344 (329)

Quaternion-Type Catalan Transforms of the ρ-Fibonacci and ρ-Lucas Numbers

open access: yesJournal of Mathematics, 2023
In this paper, we define a new sequence called the quaternion-type Catalan sequence and give generating function, exponential representation, quaternionic Catalan matrix and its some properties.
Kübra Gül
doaj   +1 more source

An Algebraic Relation between Consimilarity and Similarity of Quaternion Matrices and Applications

open access: yesJournal of Applied Mathematics, 2014
This paper, by means of complex representation of a quaternion matrix, discusses the consimilarity of quaternion matrices, and obtains a relation between consimilarity and similarity of quaternion matrices.
Tongsong Jiang, Xuehan Cheng, Sitao Ling
doaj   +1 more source

Feedforward–Feedback Controller Based on a Trained Quaternion Neural Network Using a Generalised HR Calculus with Application to Trajectory Control of a Three-Link Robot Manipulator

open access: yesMachines, 2022
This study derives a learning algorithm for a quaternion neural network using the steepest descent method extended to quaternion numbers. This applies the generalised Hamiltonian–Real calculus to obtain derivatives of a real–valued cost function ...
Kazuhiko Takahashi   +2 more
doaj   +1 more source

Quaternionic structures

open access: yesTopology and its Applications, 2010
19 ...
Čadek, M.   +2 more
openaire   +3 more sources

Quaternions for GUTs [PDF]

open access: yesInternational Journal of Theoretical Physics, 1996
16 pages ...
openaire   +3 more sources

Signal flow graph and control of realizable autonomous nonlinear Chen model with quaternion variables

open access: yesAlexandria Engineering Journal, 2020
In this work, we continue our study of autonomous nonlinear dynamical systems with quaternion variables. We present a novel chaotic Chen system with quaternion variables. This system in real form is high (nine) dimensional.
Emad E. Mahmoud   +2 more
doaj   +1 more source

Instantons and quaternions [PDF]

open access: yesProceedings of Non-perturbative Quantum Effects 2000 — PoS(tmr2000), 2000
We relate the moduli space of Yang-Mills instantons to quaternionic manifolds. For instanton number one, the Wolf spaces play an important role. We apply these ideas to instanton calculations in N=4 SYM theory.
openaire   +3 more sources

Quaternion CR-submanifolds of quaternion manifolds

open access: yesKodai Mathematical Journal, 1981
A quaternion manifold (or quaternion Kaehlerian manifold [10]) is defined as a Riemannian manifold whose holonomy group is a subgroup of Sp(l). Sp(m)=Sp(l)xSp(m)/{±1}. The quaternion projective space QP, its noncompact dual and the quaternion number space Q are three important examples of quaternion manifolds.
Barros, M., Chen, B.-Y., Urbano, F.
openaire   +3 more sources

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

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