Results 11 to 20 of about 120 (57)
Advances in Differential Equations, 2013 In this paper, we consider p-Laplacian multipoint boundary value problems on time scales. By using a generalization of the Leggett-Williams fixed point theorem due to Bai and Ge, we prove that a boundary value problem has at least three positive ...
A. Dogan
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Boundary Layer Effects on Ionic Flows Via Classical Poisson-Nernst-Planck Systems
Computational and Mathematical Biophysics, 2018 A quasi-one-dimensional steady-state Poisson-Nernst-Planck model of two oppositely charged ion species through a membrane channel is analyzed. The model problem is treated as a boundary value problem of a singularly perturbed differential system.
Zhang Mingji
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On singular $p$-Laplacian problems
Differential and Integral Equations, 2007 In this work we combine perturbation arguments and variational methods to prove the existence and uniqueness results for singular p-Laplacian problems.
K. Perera, Elves A. B. Silva
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Boundary Value Problems, 2014 By using the Banach contraction principle and the Leggett-Williams fixed point theorem, this paper investigates the uniqueness and existence of at least three positive solutions for a system of mixed higher-order nonlinear singular differential equations
Yaohong Li, Haiyan Zhang
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Advances in Differential Equations, 2014 Sufficient conditions are presented for the existence of positive periodic solutions for a third-order nonlinear differential equation with singularity. Besides, an example is given to illustrate the results. MSC:34K13, 34B16, 34B18.
Zhibo Cheng
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On singularly weighted generalized Laplacian systems and their applications
Advances in Nonlinear Analysis, 2018 We study the homogeneous Dirichlet boundary value problem of generalized Laplacian systems with a singular weight which may not be integrable. Some explicit intervals which correspond to the existence and nonexistence of positive solutions for the system
Xu Xianghui, Lee Yong-Hoon
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The nonlinear Kneser problem for singular in phase variables second-order differential equations
Boundary Value Problems, 2014 For the singular in phase variables differential equation u″=f(t,u,u′), sufficient conditions are found for the existence of a solution satisfying the conditions φ(u)=c,u(t)>0,u′(t)0, where φ:C([
N. Partsvania, B. Puza
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Second-order initial value problems with singularities
Boundary Value Problems, 2014 Using barrier strip arguments, we investigate the existence of C[0,T]∩C2(0,T]-solutions to the initial value problem x″=f(t,x,x′), x(0)=A, limt→0+x′(t)=B, which may be singular at x=A and x′=B.MSC: 34B15, 34B16, 34B18.
P. Kelevedjiev, N. Popivanov
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Periodic solutions for second order differential equations with indefinite singularities
Advances in Nonlinear Analysis, 2019 In this paper, the problem of periodic solutions is studied for second order differential equations with indefinite ...
Lu Shiping, Yu Xingchen
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One-dimensional singular problems involving the p-Laplacian and nonlinearities indefinite in sign
Advances in Nonlinear Analysis, 2016 Let Ω be a bounded open interval, let p>1${p>1}$ and γ>0${\gamma>0}$, and let m:Ω→ℝ${m:\Omega\rightarrow\mathbb{R}}$ be a function that may change sign in Ω.
Kaufmann Uriel, Medri Iván
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