Results 31 to 40 of about 274 (54)

On a Nonlocal Boundary Value Problem for Second Order Nonlinear Singular Differential Equations [PDF]

open access: yes, 2000
Criteria for the existence and uniqueness of a solution of a nonlocal second order boundary value problem are estabilished.
A. Lomtatidze, MALAGUTI, Luisa
core  

Regularizing effect of absorption terms in singular problems

open access: yes, 2018
We prove existence of solutions to problems whose model is $$\begin{cases} \displaystyle -\Delta_p u + u^q = \frac{f}{u^\gamma} & \text{in}\ \Omega, \newline u\ge0 &\text{in}\ \Omega,\newline u=0 &\text{on}\ \partial\Omega, \end{cases ...
Oliva, Francescantonio
core   +1 more source

A new approach for solving nonlinear Thomas-Fermi equation based on fractional order of rational Bessel functions

open access: yes, 2016
In this paper, the fractional order of rational Bessel functions collocation method (FRBC) to solve Thomas-Fermi equation which is defined in the semi-infinite domain and has singularity at $x = 0$ and its boundary condition occurs at infinity, have been
Delkhosh, M.   +3 more
core   +1 more source

Positive solutions for second-order differential equations with singularities and separated integral boundary conditions [PDF]

open access: yes, 2020
We study the existence of positive solutions for second-order differential equations with separated integral boundary conditions. The nonlinear part of the equation involves the derivative and may be singular for the second and third space variables. The
Abdella Kenzu   +2 more
core  

Positive solution for a class of singular semipositone fractional differential equations with integral boundary conditions

open access: yes, 2012
In this article, by employing a fixed point theorem in cones, we investigate the existence of a positive solution for a class of singular semipositone fractional differential equations with integral boundary conditions.
Xingqiu Zhang
semanticscholar   +1 more source

Solving Singular Boundary Value Problems Using Daftardar-Jafari Method [PDF]

open access: yes, 2012
In this paper, we apply the suggested iterative method by Daftardar and Jafari hereafter called Daftardar-Jafari method for solving singular boundary value problems.
Ahmadi, M., Jafari, H., Sadeghi, S.
core   +1 more source

Solvability of a Doubly Singular Boundary Value Problem Arising in Front Propagation for Reaction-Diffusion Equations [PDF]

open access: yes
The paper deals with the solvability of the following doubly singular boundary value problem (Formula presented) naturally arising in the study of the existence and properties of travelling waves for reaction-diffusion-convection equations governed by ...
Cristina Marcelli
core   +1 more source

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