Results 21 to 30 of about 816 (100)

Weak Solutions of Fractional Order Differential Equations via Volterra-Stieltjes Integral Operator

open access: yes, 2017
The fractional derivative of the Riemann-Liouville and Caputo types played an important role in the development of the theory of fractional derivatives, integrals and for its applications in pure mathematics ([18], [21]).
A. El-Sayed, W. El-Sayed, A. El-Mowla
semanticscholar   +1 more source

ON THE VOLTERRA-STIELTJES INTEGRAL EQUATION AND AXIOMATIC MEASURES OF WEAK NONCOMPACTNESS

open access: yesInternational Journal of Apllied Mathematics, 2019
In this note, we will use a compactness type condition in connection with the weak topology to prove the existence of weakly continuous solutions for a functional integral equation of Volterra-Stieltjes type in nonreflexive Banach spaces.
A.A.H. Abd El-Mwla
semanticscholar   +1 more source

Existence of an unbounded branch of the set of solutions for Neumann problems involving the p(x)-Laplacian

open access: yesBoundary Value Problems, 2014
We are concerned with the following nonlinear problem: −div(w(x)|∇u|p(x)−2∇u)+|u|p(x)−2u=μg(x)|u|p(x)−2u+f(λ,x,u,∇u) in Ω, ∂u∂n=0 on ∂ Ω, which is subject to a Neumann boundary condition, provided that μ is not an eigenvalue of the p(x)-Laplacian.
Byung-Hoon Hwang   +2 more
semanticscholar   +2 more sources

Small perturbations of critical nonlocal equations with variable exponents

open access: yesDemonstratio Mathematica, 2023
In this article, we are concerned with the following critical nonlocal equation with variable exponents: (−Δ)p(x,y)su=λf(x,u)+∣u∣q(x)−2uinΩ,u=0inRN\Ω,\left\{\begin{array}{ll}{\left(-\Delta )}_{p\left(x,y)}^{s}u=\lambda f\left(x,u)+{| u| }^{q\left(x)-2}u&
Tao Lulu, He Rui, Liang Sihua
doaj   +1 more source

Positivity of the infimum eigenvalue for equations of p(x)-Laplace type in RN

open access: yesBoundary Value Problems, 2013
We study the following elliptic equations with variable exponents −div(ϕ(x,|∇u|)∇u)=λf(x,u)in RN. Under suitable conditions on ϕ and f, we show the existence of positivity of the infimum of all eigenvalues for the problem above, and then give an ...
I. Kim, Yun-Ho Kim
semanticscholar   +2 more sources

Existence of an unbounded branch of the set of solutions for equations of p(x)-Laplace type

open access: yesBoundary Value Problems, 2014
We are concerned with the following nonlinear problem −div(ϕ(x,|∇u|)∇u)=μ|u|p(x)−2u+f(λ,x,u,∇u)in Ω subject to Dirichlet boundary conditions, provided that μ is not an eigenvalue of the p(x)-Laplacian.
Yun-Ho Kim
semanticscholar   +2 more sources

Least energy sign-changing solutions for a nonlocal anisotropic Kirchhoff type equation

open access: yesMoroccan Journal of Pure and Applied Analysis, 2022
In this paper, we investigate the existence of sign-changing solutions for the following class of fractional Kirchhoff type equations with potential (1+b[u]α2)((-Δx)αu-Δyu)+V(x,y)u=f(x,y,u),(x,y)∈ℝN=ℝn×ℝm,\left( {1 + b\left[ u \right]_\alpha ^2} \right ...
Rahmani Mohammed   +3 more
doaj   +1 more source

ON THE WEAK SOLUTIONS OF THE URYSOHN-STIELTJES FUNCTIONAL INTEGRAL EQUATIONS

open access: yes, 2018
The analysis of Urysohn-Stieltjes integral operators has been studied in [1]. Here we study the existence of weakly solution of functional integral equations of Urysohn-Stieltjes type and Hammerstien-Stieltjes type in the reflexive Banach space E.
A. El-Sayed, M. M. Al-Fadel
semanticscholar   +1 more source

Quasilinear Dirichlet problems with competing operators and convection

open access: yesOpen Mathematics, 2020
The paper deals with a quasilinear Dirichlet problem involving a competing (p,q)-Laplacian and a convection term. Due to the lack of ellipticity, monotonicity and variational structure, the known methods to find a weak solution are not applicable.
Motreanu Dumitru
doaj   +1 more source

On the regularity of solutions of the boundary value problem without initial condition for Schrödinger systems in domain with conical points

open access: yesBoundary Value Problems, 2014
In this paper, we deal with the boundary value problems without initial condition for Schrödinger systems in cylinders. We establish several results on the regularity of the solutions.MSC: 35Q41, 35B65, 35D30.
Nguyen Thi Lien, N. M. Hung
semanticscholar   +2 more sources

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