Results 1 to 10 of about 477,941 (281)

Boolean Differential Operators [PDF]

open access: yes, 2014
We consider four combinatorial interpretations for the algebra of Boolean differential operators.
Catumba, Jorge, Diaz, Rafael
core   +4 more sources

Integro-differential equations with bounded operators in Banach spaces [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
The paper investigates integro-differential equations in Banach spaces with operators, which are a composition of convolution and differentiation operators.
V.E. Fedorov, A.D. Godova, B.T. Kien
doaj   +3 more sources

The Simple Rings of Differential Operators [PDF]

open access: yesمجلة التربية والعلم, 2006
In this work, we propose the rings of differential operators are simple and for this proposition we can generalize the results of Jones in 1995. In fact, this work is complement to the results of Mahmood in 2006.
Ammar S. Mahmood, Manal E. Abd
doaj   +1 more source

Sobolev-Slobodeckij Spaces on Compact Manifolds, Revisited

open access: yesMathematics, 2022
In this manuscript, we present a coherent rigorous overview of the main properties of Sobolev-Slobodeckij spaces of sections of vector bundles on compact manifolds; results of this type are scattered through the literature and can be difficult to find. A
Ali Behzadan, Michael Holst
doaj   +1 more source

On Recovering Differential Operators on a Closed Set from Spectra [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2019
The Sturm – Liouville differential operators on closed sets of the real line are considered. Properties of their spectral characteristics are obtained and the inverse problem of recovering the operators from their spectra is studied. An algorithm for the
Yurko, Vyacheslav Anatol'evich
doaj   +1 more source

Extensions of dissipative operators with closable imaginary part [PDF]

open access: yesOpuscula Mathematica, 2021
Given a dissipative operator \(A\) on a complex Hilbert space \(\mathcal{H}\) such that the quadratic form \(f \mapsto \text{Im}\langle f, Af \rangle\) is closable, we give a necessary and sufficient condition for an extension of \(A\) to still be ...
Christoph Fischbacher
doaj   +1 more source

Depth estimation of spherical bodies using Differential Operators (Gradient PgP r , Laplacian ر2Z and Biharmonic ر4Z ) to its gravity fields. [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
Differential Operators (Gradient, Laplacian and Biharmonic) have been used to determine anomaly characteristics using theoretical gravity field for spherical bodies with different depths, radius and density contrasts. The intersection between the gravity
Ali M. Al-Rahim
doaj   +1 more source

Applications of Magnetohydrodynamic Couple Stress Fluid Flow between Two Parallel Plates with Three Different Kernels

open access: yesJournal of Function Spaces, 2021
In this paper, we investigate the implementations of newly introduced nonlocal differential operators as convolution of power law, exponential decay law, and the generalized Mittag-Leffler law with fractal derivative in fluid dynamics.
Imran Siddique   +4 more
doaj   +1 more source

The regularity properties and blow-up of the solutions for improved Boussinesq equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
In this paper, we study the Cauchy problem for linear and nonlinear Boussinesq type equations that include the general differential operators. First, by virtue of the Fourier multipliers, embedding theorems in Sobolev and Besov spaces, the existence ...
Veli Shakhmurov, Rishad Shahmurov
doaj   +1 more source

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

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