Results 11 to 20 of about 197,284 (286)

Pseudo-differential Equations with Spherical Splines

open access: yes, 2021
The aim of this chapter is to report on the design of additive Schwarz methods when spherical splines are used to solve the hypersingular integral equation on the sphere. On this geometry, this equation belongs to a wider class of the so-called pseudo-differential equations on the sphere.
Stephan, EP, Tran, T
openaire   +2 more sources

Quantization of pseudo-differential operators on the torus [PDF]

open access: yes, 2008
Pseudo-differential and Fourier series operators on the n-torus are analyzed by using global representations by Fourier series instead of local representations in coordinate charts.
Ruzhansky, Michael, Turunen, Ville
core   +3 more sources

Geodesics on the Momentum Phase Space with metric $^{{C}}{g}$

open access: yesUniversal Journal of Mathematics and Applications, 2018
In this paper, a system of the differential equations giving geodesics on the momentum phase space with pseudo Riemann metric $^{C}g$ of a Hamilton space is found by using the Euler Lagrange equations.
İsmet Ayhan
doaj   +1 more source

Convolutions in µ-pseudo almost periodic and µ-pseudo almost automorphic function spaces and applications to solve Integral equations

open access: yesNonautonomous Dynamical Systems, 2020
The aim of this work is to give sufficient conditions ensuring that the space PAP(𝕉, X, µ) of µ-pseudo almost periodic functions and the space PAA(𝕉, X, µ) of µ-pseudo almost automorphic functions are invariant by the convolution product f = k * f, k ...
Béssémè Fritz Mbounja   +4 more
doaj   +1 more source

On local solvability of pseudo-differential equations [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
A sufficient condition for the local solvability of the equation u,-A(x, t, D,)u=f(x, t) is proved, where A is a first order pseudo-differential operator with real symbol. This is a special case of the local solvability conjecture of Nirenberg and Treves. Introduction.
openaire   +1 more source

Pseudo-differential Equations with Radial Basis Functions

open access: yes, 2021
In this chapter we consider again pseudo-differential equations on the sphere. However, the chapter is diverted from the main theme of other chapters in that boundary elements are not the tool used to solve the equations. Instead, we use radial basis functions (RBFs) which results in a meshless method.
Stephan, EP, Tran, T
openaire   +2 more sources

An efficient technique for approximated BVPs via the second derivative Legendre polynomials pseudo-Galerkin method: Certain types of applications

open access: yesResults in Physics, 2022
This paper will present a highly efficient technique for solving linear and nonlinear differential equations. We will use the second derivative of Legendre polynomials as new base functions via a pseudo-Galerkin method. These base functions produce a new
M. Abdelhakem   +3 more
doaj   +1 more source

Frames of solutions and discrete analysis of pseudo‐differential equations

open access: yesMathematical Methods in the Applied Sciences, 2022
We construct discrete analogs of multidimensional singular integral operators and study their invertibility. Moreover, we give a comparison between continual and discrete case. We give the theory of periodic Riemann problem also, because it is needed for studying invertibility of so‐called paired equations.
Alexander V. Vasilyev   +2 more
openaire   +1 more source

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

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

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