Results 41 to 50 of about 1,683 (93)

2‐Conformal Vector Fields on the Model Sol Space and Hyperbolic Ricci Solitons

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In this study, we present the notion of 2‐conformal vector fields on Riemannian and semi‐Riemannian manifolds, which are an extension of Killing and conformal vector fields. Next, we provide suitable vector fields in Sol space that are 2‐conformal. A few implications of 2‐conformal vector fields in hyperbolic Ricci solitons are investigated.
Rawan Bossly   +3 more
wiley   +1 more source

Positive solutions of a boundary value problem with integral boundary conditions [PDF]

open access: yes, 2011
We consider boundary-value problems studied in a recent paper. We show that some existing theory developed by Webb and Infante applies to this problem and we use the known theory to show how to find improved estimates on parameters μ*, λ so ...
Webb, J.
core  

On Solutions of the Nonlocal Generalized Coupled Langevin‐Type Pantograph Systems

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
This paper concentrates on the analysis of a category of coupled Langevin‐type pantograph differential equations involving the generalized Caputo fractional derivative with nonlocal conditions. We conduct this analysis in two cases for the second member in the nonlinear function; in other words, for the real space R and an abstract Banach space Θ.
Houari Bouzid   +5 more
wiley   +1 more source

Weakly nonlinear boundary value problem for a matrix differential equation

open access: yes, 2016
We set forth solvability conditions and construction of the generalized Green operator for Noetherian linear boundary value problem for the matrix differential equations and solvability conditions and the constructive scheme for constructing solutions of
S. Chuiko
semanticscholar   +1 more source

New Results for p‐Laplacian Fractional Instantaneous and Noninstantaneous Impulsive Differential Equations

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
The p‐Laplacian fractional differential equations have been studied extensively because of their numerous applications in science and engineering. In this study, a class of p‐Laplacian fractional differential equations with instantaneous and noninstantaneous impulses is considered.
Wangjin Yao   +2 more
wiley   +1 more source

The Relativistic Electrodynamics Least Action Principles Revisited: New Charged Point Particle and Hadronic String Models Analysis

open access: yes, 2009
The classical relativistic least action principle is revisited from the vacuum field theory approach. New physically motivated versions of relativistic Lorentz type forces are derived, a new relativistic hadronic string model is proposed and analyzed in ...
A. K. Prykarpatsky   +49 more
core   +1 more source

Coupled coincidence point theorems for contractions without commutative condition in intuitionistic fuzzy normed spaces

open access: yes, 2011
Recently, Gordji et al. [Math. Comput. Model. 54, 1897-1906 (2011)] prove the coupled coincidence point theorems for nonlinear contraction mappings satisfying commutative condition in intuitionistic fuzzy normed spaces.
W. Sintunavarat, Y. Cho, Poom Kumam
semanticscholar   +1 more source

Particle approximation for Lagrangian Stochastic Models with specular boundary condition

open access: yes, 2017
In this paper, we prove a particle approximation, in the sense of the propagation of chaos, of a Lagrangian stochastic model submitted to specular boundary condition and satisfying the mean no-permeability ...
Bossy, Mireille, Jabir, Jean-Francois
core   +2 more sources

Existence of solution for third-order three-point boundary value problem

open access: yesMathematica, 2018
By imposing some conditions on the nonlinear term f , we construct a lower solution and an upper solution to prove the existence of a solution for a type of nonlinear third-order nonlocal boundary value problem. Our main tools are the upper and the lower
N. Bouteraa, S. Benaicha
semanticscholar   +1 more source

Existence theory for single and multiple solutions to semipositone discrete Dirichlet boundary value problems with singular dependent nonlinearities

open access: yes, 2003
International Journal of Stochastic Analysis, Volume 16, Issue 1, Page 19-31, 2003.
Daqing Jiang   +3 more
wiley   +1 more source

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