Results 1 to 10 of about 183 (29)

Existence results for a fourth order partial differential equation arising in condensed matter physics [PDF]

open access: yes, 2015
We study a higher order parabolic partial differential equation that arises in the context of condensed matter physics. It is a fourth order semilinear equation whose nonlinearity is the determinant of the Hessian matrix of the solution. We consider this
Escudero, Carlos   +4 more
core   +2 more sources

Positive Solution of Singular BVPs for System of Dynamic Equations on Time Scales [PDF]

open access: yes, 2012
This paper is devoted to derive some necessary and suficient conditions for the existence of positive solutions to a singular second order system of dynamic equations with Dirichlet boundary conditions.
Lago, Ariadna   +2 more
core   +2 more sources

Positive periodic solutions of singular systems [PDF]

open access: yes, 2010
The existence and multiplicity of positive periodic solutions for second order non-autonomous singular dynamical systems are established with superlinearity or sublinearity assumptions at infinity for an appropriately chosen parameter.
Wang, Haiyan
core   +2 more sources

Existence and uniqueness of solutions for singular fourth-order boundary value problems [PDF]

open access: yes, 2005
By mixed monotone method, the existence and uniqueness are established for singular fourth-order boundary value problems.
Jiang, Daqing   +2 more
core   +1 more source

On a class of singular boundary value problems with singular perturbation [PDF]

open access: yes, 2012
In this paper we investigate a class of singular second order differential equations with singular perturbation subject to three-point boundary value conditions, whose solution exhibits a couple of boundary layers at two endpoints.
Xie, Feng
core   +1 more source

Existence of solutions for singular fully nonlinear equations [PDF]

open access: yes, 2011
In this note we describe how to approximate some classes of singular equations by nonsingular equations. We obtain a solution to each nonsingular problem and estimates guaranteeing that the limiting function is a solution of the original ...
Montenegro, Marcelo
core   +2 more sources

Infinitely Many Radial Solutions for a Sub-Super Critical Dirichlet Boundary Value Problem in a Ball [PDF]

open access: yes, 2007
We prove the existence of infinitely many solutions to a semilinear Dirichlet boundary value problem in a ball for a nonlinearity g(u) that grows subcritically for u positive and supercritically for u ...
Castro, Alfonso   +2 more
core   +1 more source

One-dimensional singular problems involving the p-Laplacian and nonlinearities indefinite in sign [PDF]

open access: yes, 2016
Let Ω be a bounded open interval, let p > 1 and γ >, and let m : Ω → ℝ be a function that may change sign in Ω. In this article we study the existence and nonexistence of positive solutions for one-dimensional singular problems of the form - (|u′|p-2u′)′
Kaufmann, Uriel, Medri, Ivan Vladimir
core   +2 more sources

Positive solutions of a singular fractional boundary value problem with a fractional boundary condition [PDF]

open access: yes, 2017
For \(\alpha\in(1,2]\), the singular fractional boundary value problem \[D^{\alpha}_{0^+}x+f\left(t,x,D^{\mu}_{0^+}x\right)=0,\quad 0\lt t\lt 1,\] satisfying the boundary conditions \(x(0)=D^{\beta}_{0^+}x(1)=0\), where \(\beta\in(0,\alpha-1]\), \(\mu\in(
Lyons, Jeffrey W.   +1 more
core   +3 more sources

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