Results 81 to 90 of about 511,067 (272)

Positive Solutions of Elliptic Kirchhoff Equations

open access: yesAdvanced Nonlinear Studies, 2017
We prove several existence results for some nonlinear elliptic Kirchhoff equations.
Ambrosetti Antonio, Arcoya David
doaj   +1 more source

Solvability of nonlinear elliptic equations with gradient terms

open access: yesJournal of Differential Equations, 2013
We study the solvability in the whole Euclidean space of coercive quasi-linear and fully nonlinear elliptic equations modeled on $ u\pm g(|\nabla u|)= f(u)$, $u\ge0$, where $f$ and $g$ are increasing continuous functions. We give conditions on $f$ and $g$ which guarantee the availability or the absence of positive solutions of such equations in $\R^N$.
Felmer, Patricio   +2 more
openaire   +10 more sources

Multiscale Finite Element Methods for Nonlinear Problems and their Applications [PDF]

open access: yes, 2004
In this paper we propose a generalization of multiscale finite element methods (Ms-FEM) to nonlinear problems. We study the convergence of the proposed method for nonlinear elliptic equations and propose an oversampling technique.
Efendiev, Y., Ginting, V., Hou, T. Y.
core  

A nonlinear elliptic equation with singular potential and applications to nonlinear field equations

open access: yesJournal of the European Mathematical Society, 2007
We study existence and asymptotic properties of solutions to a semilinear elliptic equation in the whole space. The equation has a cylindrical symmetry and we find cylindrical solutions. The main features of the problem are that the potential has a large set of singularities (i.e. a subspace), and that the nonlinearity has a double power-like behaviour,
BADIALE, Marino, V. Benci, S. Rolando
openaire   +7 more sources

Uniqueness for Neumann problems for nonlinear elliptic equations

open access: yesCommunications on Pure & Applied Analysis, 2019
In the present paper we prove uniqueness results for solutions to a class of Neumann boundary value problems whose prototype is --div((1 + |$\nabla$u| 2) (p--2)/2 $\nabla$u) -- div(c(x)|u| p--2 u) = f in $ $, (1 + |$\nabla$u| 2) (p--2)/2 $\nabla$u + c(x)|u| p--2 u $\times$ n = 0 on $\partial$$ $,
Maria Francesca Betta   +2 more
openaire   +6 more sources

Existence and number of solutions to semilinear equations with applications to boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2000
solutions to nonlinear equations and to (non)resonant semilinear equations involving nonlinear perturbations of Fredholm maps of index zero. We apply our results to semilinear elliptic, and to semilinear parabolic and hyperbolic periodic boundary-value ...
P. S. Milojevic
doaj  

Existence of a weak bounded solution for nonlinear degenerate elliptic equations in Musielak-Orlicz spaces

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
In this paper, we show the existence of solutions for the nonlinear elliptic equations of the ...
Bourahma M., Bennouna J., El Moumni M.
doaj   +1 more source

Positive solutions for nonlinear singular elliptic equations of p-Laplacian type with dependence on the gradient

open access: yesCalculus of Variations and Partial Differential Equations, 2019
In this paper, we study a nonlinear Dirichlet problem of p-Laplacian type with combined effects of nonlinear singular and convection terms. An existence theorem for positive solutions is established as well as the compactness of solution set.
Zhenhai Liu, D. Motreanu, Shengda Zeng
semanticscholar   +1 more source

Nonlinear elliptic equations with subhomogeneous potentials

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2010
Abstract We prove the existence of nonnegative symmetric solutions to the semilinear elliptic equation − △ u + V ( | y 1 | , … , | y k | ) u = g ( u ) in  R N where x = ( z , y 1 , … , y k ) ∈ R N 0 × R N 1 × ⋯ × R N
BADIALE, Marino, S. Rolando
openaire   +3 more sources

Continuity of solutions of a nonlinear elliptic equation [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2012
We consider a nonlinear elliptic equation of the form div [a (∇u )] + F [u ] = 0 on a domain Ω, subject to a Dirichlet boundary condition tru  = φ . We do not assume that the higher order term a satisfies growth conditions from above. We prove the existence of continuous solutions either when Ω is convex and φ satisfies a one-sided bounded slope ...
openaire   +3 more sources

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