Results 1 to 10 of about 40,912 (140)

Infinite systems of linear equations for real analytic functions [PDF]

open access: yesProceedings of the American Mathematical Society, 2004
This article discusses two problems concerning Eidelheit sequences and interpolation in the space \(A(\omega)\) of real analytic complex valued functions defined on an open subset \(\omega\) of \(\mathbb R^d\). The first problem is about the characterization of the Eidelheit sequences on the space \(A(\omega)\).
Domanski, P., Vogt, D.
openaire   +2 more sources

On implicit coupled systems of fuzzy fractional delay differential equations with triangular fuzzy functions

open access: yesAIMS Mathematics, 2021
In this paper, we introduce and study an implicit coupled system of fuzzy fractional delay differential equations involving fuzzy initial values and fuzzy source functions of triangular type.
Yu-ting Wu   +2 more
doaj   +1 more source

Real-time dynamics of the $O(4)$ scalar theory within the fRG approach

open access: yesSciPost Physics, 2022
In this paper, the real-time dynamics of the $O(4)$ scalar theory is studied within the functional renormalization group formulated on the Schwinger-Keldysh closed time path.
Yang-yang Tan, Yong-rui Chen, Wei-jie Fu
doaj   +1 more source

A real-space Green’s function method for the numerical solution of Maxwell’s equations [PDF]

open access: yesCommunications in Applied Mathematics and Computational Science, 2016
Author(s): Lo, B; Minden, V; Colella, P | Abstract: A new method for solving the transverse part of the free-space Maxwell equations in three dimensions is presented. By taking the Helmholtz decomposition of the electric field and current sources and considering only the divergence-free parts, we obtain an explicit real-space representation for the ...
Lo, Boris   +2 more
openaire   +4 more sources

Mittag-Leffler function for real index and its application in solving difference and differential equations

open access: yesMiskolc Mathematical Notes, 2023
Summary: In this paper, we derive a Mittag-Leffler function for real index and establish solutions of special type of fractional order differential equations (FDEs). The same concept is extended to discrete case by replacing polynomials into factorial polynomials and differentiation into \(\ell\)-difference operator. Moreover, numerical examples of our
Simon, Jaraldpushparaj   +3 more
openaire   +1 more source

On qualitative behavior of multiple solutions of quasilinear parabolic functional equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
We shall consider weak solutions of initial-boundary value problems for semilinear and nonlinear parabolic differential equations for $t\in (0,\infty )$ with certain nonlocal terms.
László Simon
doaj   +1 more source

Features of Loss of Stability of the Work of Two-Link Mechanisms That Have an Infinite Number of Degrees of Freedom [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2018
Mechanisms consisting of two links, a leading (engine) and a slave (executive body), which are connected by long lines of force, are considered. With the use of the new method, general equations are derived in Laplace images describing the oscillations ...
Leonid Kondratenko, Lubov Mironova
doaj   +1 more source

Nonlinear pseudo-differential equations for radial real functions on a non-Archimedean field [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2020
In an earlier paper (A. N. Kochubei, {\it Pacif. J. Math.} 269 (2014), 355--369), the author considered a restriction of Vladimirov's fractional differentiation operator $D^ $, $ >0$, to radial functions on a non-Archimedean field. In particular, it was found to possess such a right inverse $I^ $ that the change of an unknown function $u=I^ v ...
openaire   +2 more sources

Estimation of Suspended Sediment Load Using Integrated Intelligent Methods with Considering Model Uncertainty [PDF]

open access: yesمجله آب و خاک, 2021
Introduction: Sediment transportation and accurate estimation of its rate is a significant issue for river engineers and researchers. So far, various and complex relationships have been proposed to predict the amount of suspended sediment transport rate,
S.M. Saghebian
doaj   +1 more source

Spectral analysis of an operator associated with linear functional differential equations and its applications

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2000
The spectral set of an operator which is associated with linear autonomous functional differential equations is determined. The consequence is applied to study the admissibility of linear autonomous functional differential equations for the function ...
Satoru Murakami   +2 more
doaj   +1 more source

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