Results 1 to 10 of about 23,170 (262)

Twin Vector Fields and Independence of Spectra for Quadratic Vector Fields [PDF]

open access: yesJournal of Dynamical and Control Systems, 2016
The object of this paper is to address the following question: When is a polynomial vector field on $\mathbb{C}^2$ completely determined (up to affine equivalence) by the spectra of its singularities? We will see that for quadratic vector fields this is not the case: given a generic quadratic vector field there is, up to affine equivalence, exactly one
Valente Ramirez
exaly   +3 more sources

Quadratic Hamiltonian Vector Fields

open access: yesJournal of Differential Equations, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jaume Llibre
exaly   +3 more sources

Parameter Constraints and Real Structures in Quadratic Semicomplete Vector Fields on C3

open access: yesInternational Journal of Mathematics and Mathematical Sciences
It is a remarkable fact that among the known examples of quadratic semicomplete vector fields on C3, it is always possible to find linear coordinates where the corresponding vector field has all—or “almost all”—coefficients in the real numbers.
Daniel de la Rosa Gómez
doaj   +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

From the Vector to Scalar Perturbations Addition in the Stark Broadening Theory of Spectral Lines

open access: yesUniverse, 2021
The effect of plasma Coulomb microfied dynamics on spectral line shapes is under consideration. The analytical solution of the problem is unachievable with famous Chandrasekhar–Von-Neumann results up to the present time.
Valery Astapenko   +2 more
doaj   +1 more source

A New 3D Marine Controlled-Source Electromagnetic Modeling Algorithm Based on Two New Types of Quadratic Edge Elements

open access: yesApplied Sciences, 2023
This study proposes a new algorithm for a higher-order vector finite element method based on two new types of second-order edge elements to solve the electromagnetic field diffusion problem in a 3D anisotropic medium.
Bin Xiong   +5 more
doaj   +1 more source

Exact Solutions for Isobaric Inhomogeneous Couette Flows of a ‎Vertically Swirling Fluid [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2023
The paper generalizes the partial class of exact solutions to the Navier–Stokes equations. The proposed exact solution describes an inhomogeneous three-dimensional shear flow in a layer of a viscous incompressible fluid.
Sergey Ershkov   +2 more
doaj   +1 more source

On Hyperbolic Complex Numbers

open access: yesApplied Sciences, 2022
For dimensions two, three and four, we derive hyperbolic complex algebraic structures on the basis of suitably defined vector products and powers which allow in a standard way a series definitions of the hyperbolic vector exponential function.
Wolf-Dieter Richter
doaj   +1 more source

Gauged D = 4 N $$ \mathcal{N} $$ = 4 supergravity

open access: yesJournal of High Energy Physics, 2023
We present the full Lagrangian and supersymmetry transformation rules for the gauged D = 4, N $$ \mathcal{N} $$ = 4 (half-maximal) supergravity coupled to an arbitrary number of vector multiplets. Using the embedding tensor formulation, the final results
G. Dall’Agata   +3 more
doaj   +1 more source

Dimension Reduction Localization Algorithm of Mixed Sources Based on MEMS Vector Hydrophone Array

open access: yesMicromachines, 2022
In this paper, a mixed sources dimension reduction Multiple Signal Classification (MUSIC) localization algorithm suitable for Micro-Electro-Mechanical System (MEMS) vector hydrophone linear arrays is proposed, which reduces the two-dimensional search to ...
Zhenzhen Shang   +5 more
doaj   +1 more source

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