Results 21 to 30 of about 197,486 (286)

Relativistic wave equations with fractional derivatives and pseudo-differential operators [PDF]

open access: yes, 2000
The class of the free relativistic covariant equations generated by the fractional powers of the D'Alambertian operator $(\square^{1/n})$ is studied. Meanwhile the equations corresponding to n=1 and 2 (Klein-Gordon and Dirac equations) are local in their
Zavada, P.
core   +3 more sources

A New Hybrid Method Based on Pseudo Differential Operators and Haar Wavelet to Solve ODEs [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2018
In this paper we present a new and efficient method by combining pseudo differential operators and Haar wavelet to solve the linear and nonlinear differential equations. The present method performs extremely well in terms of efficiency and simplicity.
M.B. Ghaemi   +2 more
doaj   +1 more source

Mu pseudo rotating-periodic solutions for differential equations

open access: yesElectronic Journal of Differential Equations, 2020
In this article, we combine rotating periodic functions with $\mu$ ergodic functions to obtain a new class of functions called $\mu$ pseudo rotating periodic functions.
Dandan Li, Jiayin Du
doaj  

When is a pseudo-differential equation solvable ? [PDF]

open access: yesAnnales de l'Institut Fourier, 2000
This paper begins with a broad survey of the state of the art in matters of solvability for differential and pseudo-differential equations. Then we proceed with a Hilbertian lemma which we use to prove a new solvability result.
openaire   +2 more sources

Two approximation methods for fractional order Pseudo-Parabolic differential equations

open access: yesAlexandria Engineering Journal, 2022
In this study, fractional order pseudo-parabolic partial differential equation defined by Caputo derivative is investigated with initial-boundary conditions. Modified double Laplace decomposition method is used to find the exact solution of this equation.
Mahmut. Modanli   +4 more
doaj   +1 more source

Well-posed initial-boundary value problem for the harmonic Einstein equations using energy estimates [PDF]

open access: yes, 2007
In recent work, we used pseudo-differential theory to establish conditions that the initial-boundary value problem for second order systems of wave equations be strongly well-posed in a generalized sense. The applications included the harmonic version of
Kreiss, H. -O.   +3 more
core   +2 more sources

Syntheses of differential games and pseudo-Riccati equations

open access: yesAbstract and Applied Analysis, 2002
For differential games of fixed duration of linear dynamical systems with nonquadratic payoff functionals, it is proved that the value and the optimal strategies as saddle point exist whenever the associated pseudo-Riccati equation has a regular solution
Yuncheng You
doaj   +1 more source

Local Isometric immersions of pseudo-spherical surfaces and evolution equations

open access: yes, 2015
The class of differential equations describing pseudo-spherical surfaces, first introduced by Chern and Tenenblat [3], is characterized by the property that to each solution of a differential equation, within the class, there corresponds a 2-dimensional ...
A. Huber   +17 more
core   +2 more sources

Killing spinor-valued forms and the cone construction [PDF]

open access: yes, 2016
On a pseudo-Riemannian manifold $\mathcal{M}$ we introduce a system of partial differential Killing type equations for spinor-valued differential forms, and study their basic properties.
Somberg, Petr, Zima, Petr
core   +2 more sources

On some solvability theorems for pseudo-differential equations

open access: yes, 2023
14 ...
Vasilyev, Vladimir   +2 more
openaire   +2 more sources

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