Results 21 to 30 of about 526 (91)
Existence of solutions for elliptic equations having natural growth terms in Orlicz spaces
Existence result for strongly nonlinear elliptic equation with a natural growth condition on the nonlinearity is proved.
A. Elmahi, D. Meskine
wiley +1 more source
Multiple positive solutions for quasilinear elliptic problems with sign‐changing nonlinearities
Using variational arguments, we prove some nonexistence and multiplicity results for positive solutions of a system of p‐Laplace equations of gradient form. Then we study a p‐Laplace‐type problem with nonlinear boundary conditions.
Julián Fernández Bonder
wiley +1 more source
In this paper, we show the existence of an S-shaped connected component in the set of radial positive solutions of boundary value ...
Xu Man, Ma Ruyun
doaj +1 more source
An equality for the curvature function of a simple and closed curve on the plane
We prove an equality for the curvature function of a simple and closed curve on the plane. This equality leads to another proof of the four‐vertex theorem in differential geometry. While examining the regularity assumption on the curve for the equality, we make comments on the relation between the boundary regularity of a Riemann mapping and two ...
Biao Ou
wiley +1 more source
Solutions to H‐systems by topological and iterative methods
We study H‐systems with a Dirichlet boundary data g. Under some conditions, we show that if the problem admits a solution for some (H0, g0), then it can be solved for any (H, g) close enough to (H0, g0). Moreover, we construct a solution of the problem applying a Newton iteration.
P. Amster, M. C. Mariani
wiley +1 more source
Optical design of two-reflector systems, the Monge-Kantorovich mass transfer problem and Fermat's principle [PDF]
It is shown that the problem of designing a two-reflector system transforming a plane wave front with given intensity into an output plane front with prescribed output intensity can be formulated and solved as the Monge-Kantorovich mass transfer problem ...
Glimm, Tilmann, Oliker, Vladimir
core +3 more sources
Sign‐changing and multiple solutions for the p‐Laplacian
We obtain a positive solution, a negative solution, and a sign‐changing solution for a class of p‐Laplacian problems with jumping nonlinearities using variational and super‐subsolution methods.
Siegfried Carl, Kanishka Perera
wiley +1 more source
A semi-linear boundary-value problem with nonlinear Robin boundary conditions is considered in a thin 3D aneurysm-type domain that consists of thin curvilinear cylinders that are joined through an aneurysm of diameter 𝓞(ε). Using the multi-scale analysis,
Mel’nyk Taras A. +1 more
doaj +1 more source
On an asymptotically linear elliptic Dirichlet problem
Under very simple conditions, we prove the existence of one positive and one negative solution of an asymptotically linear elliptic boundary value problem. Even for the resonant case at infinity, we do not need to assume any more conditions to ensure the boundness of the (PS) sequence of the corresponding functional. Moreover, the proof is very simple.
Zhitao Zhang +3 more
wiley +1 more source
The Bahri–Coron Theorem for Fractional Yamabe-Type Problems
We study the following fractional Yamabe-type equation:
Abdelhedi Wael +2 more
doaj +1 more source

