Results 121 to 130 of about 811 (206)

Lower bounds for generalized eigenvalues of the quasilinear systems

open access: yes, 2012
In this paper, we establish several new Lyapunov-type inequalities for two classes of one-dimensional quasilinear elliptic systems of resonant type, which generalize or improve all related existing ones.
Xiaofei He   +3 more
core   +1 more source

Existence of multiple solutions for quasilinear diagonal elliptic systems

open access: yesElectronic Journal of Differential Equations, 1999
Nonsmooth-critical-point theory is applied in proving multiplicity results for the quasilinear symmetric elliptic system $$ -sum_{i,j=1}^{n}D_j(a^{k}_{ij}(x,u)D_iu_k)+ {1over 2}sum_{i,j=1}^{n}sum_{h=1}^N D_{s_k}a^{h}_{ij}(x,u)D_iu_hD_ju_h=g_k(x,u ...
Marco Squassina
doaj  

Existence of positive radial solutions of general quasilinear elliptic systems

open access: yesAdvances in Nonlinear Analysis
Let Ω⊂Rn(n≥2)\Omega \subset {{\mathbb{R}}}^{n}\hspace{0.33em}\left(n\ge 2) be either an open ball BR{B}_{R} centred at the origin or the whole space. We study the existence of positive, radial solutions of quasilinear elliptic systems of the form Δpu=f1(∣
Devine Daniel
doaj   +1 more source

Nonhomogeneous quasilinear elliptic systems with small perturbations and lack of compactness

open access: yesBulletin of Mathematical Sciences
We investigate a class of quasilinear elliptic system involving a nonhomogeneous differential operator which is introduced by Stuart [Milan J. Math. 79 (2011) 327–341] and depends not only on [Formula: see text] but also on u.
Xingyong Zhang, Wanting Qi
doaj   +1 more source

Classical solutions of quasilinear parabolic systems on two dimensional domains

open access: yes, 2006
Using results on abstract evolutions equations and recently obtained results on elliptic operators with discontinuous coefficients including mixed boundary conditions we prove that quasilinear parabolic systems admit a local, classical solution in the ...
Neidhardt, Hagen   +2 more
core   +1 more source

Multiplicity of positive solutions for quasilinear elliptic p-Laplacian systems

open access: yesElectronic Journal of Differential Equations, 2012
We study the existence and multiplicity of solutions to the elliptic system $$displaylines{ -hbox{div}(|abla u|^{p-2} abla u)+m_1(x)|u|^{p-2}u =lambda g(x,u) quad xin Omega,cr -hbox{div}(|abla v|^{p-2} abla v)+m_2(x)|v|^{p-2}v=mu h(x,v) quad xin ...
Asadollah Aghajani, Jamileh Shamshiri
doaj  

Homogenization and correctors for composite media with coated and highly anisotropic fibers

open access: yesElectronic Journal of Differential Equations, 2012
This article presents the homogenization of a quasilinear elliptic-parabolic problem in an $varepsilon$-periodic medium consisting of a set of highly anisotropic fibers surrounded by coating layers, the whole being embedded in a third material having
Ahmed Boughammoura
doaj  

On the existence of a priori bounds for positive solutions of elliptic problems, II

open access: yesRevista Integración, 2019
We continue studying the existence of uniform L∞ a priori bounds for positive solutions of subcritical elliptic equations (P)p       − \Delta_pu = f(u), in \Omega,  u = 0, on ∂\Omega, We provide sufficient conditions for having a-priori L∞ bounds for C1 ...
Rosa Pardo
doaj  

Anisotropic quasilinear elliptic systems with homogeneous critical nonlinearities

open access: yesMathematische Nachrichten
AbstractIn this work, we consider a system of quasilinear elliptic equations driven by an anisotropic ‐Laplacian. The lower order nonlinearities are in potential form and exhibit critical Sobolev growth. We exhibit conditions on the coefficients of the differential operator, the domain of the unknown function, and the lower order nonlinearities under ...
openaire   +3 more sources

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