Results 11 to 20 of about 30,951 (244)

Hyperbolic Harmonic Functions and Hyperbolic Brownian Motion [PDF]

open access: yesAdvances in Applied Clifford Algebras, 2020
Abstract We study harmonic functions with respect to the Riemannian metric $$\begin{aligned} ds^{2}=\frac{dx_{1}^{2}+\cdots +dx_{n}^{2}}{x_{n}^{\frac{2\alpha }{n-2}}} \end{aligned}$$ d s 2 = d x 1 2 + ⋯ + d x n 2 x n 2 α n - 2 in the upper half space $$\mathbb {R}_{+}^{n}=\{\left( x_{1},\ldots ,x_{n}\right) \in \mathbb
Sirkka-Liisa Eriksson, Terhi Kaarakka
openaire   +4 more sources

Performance enhancement of multivariable model reference optimal adaptive motor speed controller using error-dependent hyperbolic gain functions

open access: yesAutomatika, 2020
The main contribution of this paper is to formulate a robust-adaptive and stable state-space speed control strategy for DC motors. The linear-quadratic-integral (LQI) controller is utilized as the baseline controller for optimal speed-regulation ...
Omer Saleem   +3 more
doaj   +1 more source

On green’s function of second darboux problem for hyperbolic equation

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
A definition and justify a method for constructing the Green’s function of the second Darboux problem for a two-dimensional linear hyperbolic equation of the second order in a characteristic triangle is given.
B. Derbissaly
doaj   +1 more source

Hyperbolic Green Function Estimates [PDF]

open access: yesPotential Analysis, 2020
AbstractFor a hyperbolic Brownian motion in the hyperbolic space $\mathbb {H}^{n}, n\ge 3$ ℍ n , n ≥ 3
M. Ryznar, G. Serafin, T. Żak
openaire   +2 more sources

On the Superstability of the Pexider Type Trigonometric Functional Equation

open access: yesJournal of Inequalities and Applications, 2010
We will investigate the superstability of the (hyperbolic) trigonometric functional equation from the following functional equations: f(x+y)±g(x−y)=λf(x)g(y) andf(x+y)±g(x−y)=λg(x)f(y), which can be considered ...
Gwang Hui Kim
doaj   +2 more sources

Hyperbolic Horadam Functions

open access: yesGazi University Journal of Science, 2019
This article introduce hyperbolic functions connected to Horadam sequence. That is, we define hyperbolic Horadam functions and present their hyperbolic and recursive properties. We give some geometrical properties of hyperbolic Horadam functions.
BAHSI, Mustafa, SOLAK, Suleyman
openaire   +4 more sources

Application of the Surveillance Device in the Control System for an Electromechanical System with Distributed Parameters in its Mechanical Part

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2023
A system with distributed parameters in its mechanical part is considered. Examples of such a system are given. The reason for taking into account the distribution of parameters in such systems is indicated.
A. P. Korneev   +2 more
doaj   +1 more source

New Sharp Bounds for the Modified Bessel Function of the First Kind and Toader-Qi Mean

open access: yesMathematics, 2020
Let I v x be he modified Bessel function of the first kind of order v. We prove the double inequality sinh t t cosh 1 / q q t
Zhen-Hang Yang   +2 more
doaj   +1 more source

An Updated Evaluation of Intrathecal IgG Synthesis Markers in Relation to Oligoclonal Bands

open access: yesDiagnostics, 2023
The aim was to evaluate the performance of the latest quantitative marker for intrathecal IgG synthesis and to compare it with other established markers used for the same purpose.
Fotini Boufidou   +7 more
doaj   +1 more source

Numerically Stable form of Green’s Function for a Free-Free Uniform Timoshenko Beam

open access: yesMathematics, 2022
Beam models are widely applied in civil engineering, transport, and industry because the beams are basic structural elements. When dealing with the high-order modes of beam in the context of applying the modal analysis method, the numerical instability ...
Traian Mazilu
doaj   +1 more source

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