Results 21 to 30 of about 10,322 (241)

An Existence Study on the Fractional Coupled Nonlinear q-Difference Systems via Quantum Operators along with Ulam–Hyers and Ulam–Hyers–Rassias Stability

open access: yesJournal of Function Spaces, 2022
In this paper, we study the existence of solutions and their uniqueness and different kinds of Ulam–Hyers stability for a new class of nonlinear Caputo quantum boundary value problems.
Shahram Rezapour   +5 more
doaj   +1 more source

A List of 1 + 1 Dimensional Integrable Equations and Their Properties [PDF]

open access: yes, 2001
This paper contains a list of known integrable systems. It gives their recursion-, Hamiltonian-, symplectic- and cosymplectic operator, roots of their symmetries and their scaling ...
Jing Ping Wang, Wang, Jing Ping
core   +1 more source

Existence and Uniqueness of Renormalized Solution to Nonlinear Anisotropic Elliptic Problems with Variable Exponent and L1-Data

open access: yesInternational Journal of Differential Equations, 2023
Nonlinear partial differential equations are considered as an essential tool for describing the behavior of many natural phenomena. The modeling of some phenomena requires to work in Sobolev spaces with constant exponent.
Ibrahime Konaté, Arouna Ouédraogo
doaj   +1 more source

Singular Value Analysis of Hankel Operators for General Nonlinear Systems [PDF]

open access: yes, 2003
This paper discusses singular value analysis of Hankel operators for both continuous-time and discrete-time general nonlinear systems. Singular value analysis clarifies the gain structure of a given operator.
K. Fujimoto   +5 more
core   +5 more sources

Discrete Differential Operators for Computer Graphics [PDF]

open access: yes, 2004
This thesis presents a family of discrete differential operators. Since these operators are derived taking into account the continuous notions of differential geometry, they possess many similar properties.
Meyer, Mark
core   +1 more source

The stability of solutions to delay differential equations in Banach spaces

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The work is devoted to the analysis of stability in the sense Lyapunov of steady-state solutions of nonlinear differential equations in Banach spaces with time-dependent operators and with time-dependent delays.
Il'ya V. Boykov
doaj   +1 more source

Symmetric Properties for Choquard Equations Involving Fully Nonlinear Nonlocal Operators

open access: yesBulletin of the Brazilian Mathematical Society, New Series, 2021
In this paper, the positive solutions to Choquard equation involving fully nonlinear nonlocal operator are shown to be symmetric and monotone by using the moving plane method which has been introduced by Chen, Li and Li in 2015. The key ingredients are to obtain the "narrow region principle" and "decay at infinity" for the corresponding problems ...
Wang, Pengyan, Chen, Li, Niu, Pengcheng
openaire   +3 more sources

Solution of the inverse spectral problem for differential operators on a finite interval with complex weights [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
Non-self-adjoint second-order ordinary differential operators on a finite interval with complex weights are studied. Properties of spectral characteristics are established, and the inverse problem of recovering operators from their spectral ...
Yurko, Vjacheslav Anatol'evich
doaj   +1 more source

Microstructure-property mapping modeling for AZ31 alloy rolling deformation using improved PSO-BP neural network

open access: yesJournal of Materials Research and Technology, 2023
The mechanical properties of wrought magnesium alloys depend on their microstructure, particularly the grain size and its distribution. Conventional modeling methods struggle to accurately predict the complex physical relationship between them.
Shuang Xu   +5 more
doaj   +1 more source

Nonlinear operators and their propagators [PDF]

open access: yes, 1997
Mathematical physicists are familiar with a large set of tools designed for dealing with linear operators, which are so common in both the classical and quantum theories; but many of those tools are useless with nonlinear equations of motion.
Schwartz, Charles, Charles Schwartz
core   +1 more source

Home - About - Disclaimer - Privacy