Results 1 to 10 of about 22,597,145 (371)

Quasilinear and singular elliptic systems [PDF]

open access: yesAdvances in Nonlinear Analysis, 2013
In this paper, we investigate a general quasilinear elliptic and singular system. By monotonicity methods, we give some existence and uniqueness results.
Giacomoni, Jacques   +2 more
core   +6 more sources

Borderline Global Regularity for Nonuniformly Elliptic Systems [PDF]

open access: yesInternational mathematics research notices, 2022
We establish sharp global regularity results for solutions to nonhomogeneous, nonuniformly elliptic systems with zero boundary conditions imposed only on some part of the boundary of convex domains.
C. Filippis, Mirco Piccinini
semanticscholar   +1 more source

A pointwise differential inequality and second-order regularity for nonlinear elliptic systems [PDF]

open access: yesMathematische Annalen, 2021
A sharp pointwise differential inequality for vectorial second-order partial differential operators, with Uhlenbeck structure, is offered. As a consequence, optimal second-order regularity properties of solutions to nonlinear elliptic systems in domains ...
A. Balci   +3 more
semanticscholar   +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   +3 more sources

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

Gradient Estimates for Divergence Form Elliptic Systems Arising from Composite Material [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2019
In this paper, we show that $W^{1,p}$ $(1\leq ...
Hongjie Dong, Longjuan Xu
semanticscholar   +1 more source

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

Riemann–Hilbert boundary value problem for multidimensional elliptic systems of equations

open access: yesLietuvos Matematikos Rinkinys, 2023
Multidimensional analogues of Cauchy–Riemann quations and of Riemann–Hilbert boundary value problem are studied. Their relation to the scalar boundary value problem is demonstrated.
Eugenijus Paliokas
doaj   +3 more sources

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

A Priori Bounds And Existence Of Positive Solutions For Semilinear Elliptic Systems [PDF]

open access: yes, 2017
We provide a-priori L∞ bounds for classical positive solutions of semilinear elliptic systems in bounded convex domains when the nonlinearities are below the power functions v^p and u^q for any (p,q) lying on the critical Sobolev hyperbola.
Mavinga, Nsoki, Pardo, R.
core   +2 more sources

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