Results 1 to 10 of about 722,094 (124)

Saddle-shaped positive solutions for elliptic systems with bistable nonlinearity

open access: yesMathematics in Engineering, 2020
In this paper we prove the existence of infinitely many saddle-shaped positive solutions for non-cooperative nonlinear elliptic systems with bistable nonlinearities in the phase-separation regime.
Nicola Soave
doaj   +1 more source

Global bifurcation of positive solutions for a class of superlinear elliptic systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
We are concerned with the global bifurcation of positive solutions for semilinear elliptic systems of the form \begin{equation*} \begin{cases} -\Delta u=\lambda f(u,v) &\text{in}~\Omega,\\ -\Delta v=\lambda g(u,v) &\text{in}~\Omega,\\
Ruyun Ma, Yan Zhu, Yali Zhang
doaj   +1 more source

Communication Aspects for a Measurement Based UWB in-Body to on-Body Channel

open access: yesIEEE Access, 2019
A wireless capsule endoscopy (WCE) is a good option for the screening of the digestive system. To better facilitate detection of diseases at an early stage, gastroenterologists seek both higher frame rate and frame resolution than what is offered in the ...
Pal Anders Floor   +5 more
doaj   +1 more source

Multidimensional analogs of A. Bicardze system

open access: yesLietuvos Matematikos Rinkinys, 2001
The problem of classification of elliptic partial differential systems is studied. Two classes of multidimensional elliptic systems are defined, that are to be considered multidimensional ana­logs of strongly connected and weekly connected elliptic ...
Eugenijus Paliokas
doaj   +1 more source

Nonlinear elliptic systems

open access: yesAnais da Academia Brasileira de Ciências, 2000
In this paper we treat the question of the existence of solutions of boundary value problems for systems of nonlinear elliptic equations of the form - deltau = f (x, u, v,Ñu,Ñv), - deltav = g(x, u, v, Ñu, Ñv), in omega, We discuss several classes of such
DJAIRO G. DEFIGUEIREDO
doaj   +1 more source

ON THE COMPACTNESS OF ONE CLASS OF QUASICONFORMAL MAPPINGS

open access: yesПроблемы анализа, 2019
We consider an elliptic system in the disk |z| < 1 for the so-called p-analytic functions. This system admits degeneration at the boundary of the disk.
E. A. Shcherbakov, I. A. Avdeyev
doaj   +1 more source

Elliptic Flowers: New Types of Dynamics to Study Classical and Quantum Chaos

open access: yesEntropy, 2022
We construct examples of billiards where two chaotic flows are moving in opposite directions around a non-chaotic core or vice versa; the dynamics in the core are chaotic but flows that are moving in opposite directions around it are non-chaotic.
Hassan Attarchi, Leonid A. Bunimovich
doaj   +1 more source

An Elliptic Garnier System from Interpolation [PDF]

open access: yesSIGMA 13 (2017), 069, 8 pages, 2017
Considering a certain interpolation problem, we derive a series of elliptic difference isomonodromic systems together with their Lax forms. These systems give a multivariate extension of the elliptic Painlev\'e equation.
arxiv   +1 more source

Existence via regularity of solutions for elliptic systems and saddle points of functionals of the calculus of variations

open access: yesAdvances in Nonlinear Analysis, 2017
The core of this paper concerns the existence (via regularity) of weak solutions in W01,2${W_{0}^{1,2}}$ of a class of elliptic systems such ...
Boccardo Lucio, Orsina Luigi
doaj   +1 more source

Existence results for a class of (p,q) Laplacian systems

open access: yesNonlinear Analysis, 2010
. We establish the existence of a nontrivial solution for inhomogeneous quasilinear elliptic systems: −∆pu = λ a(x) u |u|γ−2 + α (α + β)–1 b(x) u |u|α−2 |v|β + f    in Ω, −∆qv = µ d(x) v |v|γ−2 + β (α + β)–1 b(x) |u|α v |v|β−2 + g    in Ω, (u,v) ∈ W01,p ...
G. A. Afrouzi, M. Mirzapour
doaj   +1 more source

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