Results 111 to 120 of about 6,505 (230)

Existence of maximal and minimal weak solutions and finite difference approximations for elliptic systems with nonlinear boundary conditions

Electronic Journal of Differential Equations
We establish the existence of maximal and minimal weak solutions between ordered pairs of weak sub- and super-solutions for a coupled system of elliptic equations with quasimonotone nonlinearities on the boundary.
Shalmali Bandyopadhyay, Thomas Lewis, Nsoki Mavinga   +2 more
doaj  

Discrete sub- and supersolutions method

, 2021
This thesis develops the discrete sub- and supersolutions method and applies it to prove the convergence of the nonlinear finite element method applied to the generalized di usive logistic equation......
openaire   +2 more sources

Asymptotic behavior of positive large solutions of semilinear Dirichlet problems

Electronic Journal of Qualitative Theory of Differential Equations, 2013
Let $\Omega $ be a smooth bounded domain in $\mathbb{R}^{n},\ n\geq 2$. This paper deals with the existence and the asymptotic behavior of positive solutions of the following problems \begin{equation*} \Delta u=a(x)u^{\alpha },\alpha >1\text{ and }\Delta
Habib Maagli, Sonia Ben Othman, Rym Chemmam   +2 more
doaj   +1 more source

Perspective Shape-from-Shading Problem: A Unified Convergence Result for Several Non-Lambertian Models. [PDF]

J Imaging, 2022
Tozza S.
europepmc   +1 more source

Location of zeros of non-trivial positive supersolutions to Schrödinger equations [PDF]

, 2019
Tomasz Klimsiak
openalex   +1 more source

Nonlinear finite elements: Sub- and supersolutions for the heterogeneous logistic equation

, 2021
David Aleja, Marcela Molina-Meyer
openalex   +2 more sources

Existence, uniqueness and multiplicity of positive solutions for some nonlocal singular elliptic problems

Electronic Journal of Differential Equations, 2017
In this article, using the sub-supersolution method and Rabinowitz-type global bifurcation theory, we prove some results on existence, uniqueness and multiplicity of positive solutions for some singular nonlocal elliptic problems.
Baoqiang Yan, Qianqian Ren
doaj  

Global Dynamics of Generalized Logistic Equations

Advanced Nonlinear Studies, 2018
We consider a parameter dependent parabolic logistic population model with diffusion and degenerate logistic term allowing for refuges for the population.
Daners Daniel, López-Gómez Julián
doaj   +1 more source

Qualitative analysis of a reaction-diffusion SIRS epidemic model with nonlinear incidence rate and partial immunity. [PDF]

Infect Dis Model, 2023
Wang J, Teng Z, Dai B.
europepmc   +1 more source

The sub-supersolution method for variable exponent double phase systems with nonlinear boundary conditions

, 2023
Umberto Guarnotta, Roberto Livrea, Patrick Winkert   +2 more
openalex   +2 more sources