Results 51 to 60 of about 38,570 (167)

Degenerate exponential integral function and its properties

open access: yesArab Journal of Mathematical Sciences, 2022
PurposeIn this paper, the author introduces a degenerate exponential integral function and further studies some of its analytical properties. The new function is a generalization of the classical exponential integral function and the properties established are analogous to those satisfied by the classical function.Design/methodology/approachThe methods
openaire   +3 more sources

A Saturation Adaptive Nonlinear Integral Sliding Mode Controller for Ship Permanent Magnet Propulsion Motors

open access: yesJournal of Marine Science and Engineering
The conventional-speed Sliding Mode Controller (SMC) for ship PM propulsion motors, which employs exponential reaching laws and linear sliding surface functions, demonstrates susceptibility to oscillatory phenomena.
Xi Wang   +5 more
doaj   +1 more source

Sharp Exponential Integrability for Traces of Monotone Sobolev Functions [PDF]

open access: yesNagoya Mathematical Journal, 2008
AbstractWe answer a question posed in [12] on exponential integrability of functions of restricted n-energy. We use geometric methods to obtain a sharp exponential integrability result for boundary traces of monotone Sobolev functions defined on the unit ball.
Pankka, Pekka   +2 more
openaire   +3 more sources

Theoretical Foundations and Mathematical Formalism of the Power-Law Tailed Statistical Distributions

open access: yesEntropy, 2013
We present the main features of the mathematical theory generated by the √ κ-deformed exponential function expκ(x) = ( 1 + κ2x2 + κx)1/κ, with 0 ≤ κ < 1, developed in the last twelve years, which turns out to be a continuous one parameter deformation of ...
Giorgio Kaniadakis
doaj   +1 more source

Concerning some integrals of the generalized exponential-integral function

open access: yesComputers & Mathematics with Applications, 1992
The main concern of this study consists of generalising expressions applicable to the exponential integral of positive integer order to that of general real order. Associated moments connected with simple powers of the variable of integration are discussed along with the so-called polynomial moments in which such standard polynomials as that of ...
G. Maino, S. Lorenzutta, Cesare Chiccoli
openaire   +2 more sources

Decay rates for solutions of semilinear wave equations with a memory condition at the boundary

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2002
In this paper, we study the stability of solutions for semilinear wave equations whoseboundary condition includes a integral that represents the memory effect.
M. L. Santos
doaj   +1 more source

Logarithmic singularity subtraction for matrix‐friendly layered medium Green's functions

open access: yesElectronics Letters
A subtraction procedure is proposed to evaluate the logarithmic singularity for matrix‐friendly layered medium Green's functions. In this subtraction procedure, an integral of the Bessel function combined with the exponential function and power function,
Shuo Wang
doaj   +1 more source

Explicit Formula of Koszul–Vinberg Characteristic Functions for a Wide Class of Regular Convex Cones

open access: yesEntropy, 2016
The Koszul–Vinberg characteristic function plays a fundamental role in the theory of convex cones. We give an explicit description of the function and related integral formulas for a new class of convex cones, including homogeneous cones and cones ...
Hideyuki Ishi
doaj   +1 more source

Strong and weak admissibility of $L^\infty$ spaces

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
For a dynamics with continuous time, we consider the notion of a strong exponential dichotomy with respect to a family of norms and we characterize it in terms of the admissibility of bounded solutions.
Luis Barreira, Claudia Valls
doaj   +1 more source

New Subclasses of Bi-Univalent Functions Associated with Exponential Functions and Fibonacci Numbers

open access: yesمجلة بغداد للعلوم
Lewin discussed the class  of bi-univalent functions and obtained the bound for the second coefficient, Sakar and Wanas defined two new subclasses of bi-univalent functions and obtained upper bounds for the elementary coefficients |a2| and |a3| for ...
Majd Ayash   +3 more
doaj   +1 more source

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