Results 21 to 30 of about 2,229 (304)

Regularity properties of degenerate convolution-elliptic equations [PDF]

open access: yes, 2016
The coercive properties of degenerate abstract convolution-elliptic equations are investigated. Here we find sufficient conditions that guarantee the separability of these problems in Lp spaces.
Shakhmurov, Veli B.   +4 more
core   +1 more source

Existence and Multiplicity Results for Degenerate Elliptic Equations with Dependence on the Gradient

open access: yesBoundary Value Problems, 2007
We study the existence of positive solutions for a class of degenerate nonlinear elliptic equations with gradient dependence. For this purpose, we combine a blowup argument, the strong maximum principle, and Liouville-type theorems to obtain a ...
Sebastian Lorca, Leonelo Iturriaga
doaj   +2 more sources

Solution of the Basic Boundary Value Problems for a Degenerate Elliptic Equation by the Method of Potentials [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
Fundamental solutions to a degenerate elliptic equation are found. Using these fundamental solutions, simple and double layer potentials are built.
R.M. Askhatov, R.N. Abaydullin
doaj  

Application of the Stampacchia lemma to anisotropic degenerate elliptic equations

open access: yesJournal of Innovative Applied Mathematics and Computational Sciences, 2023
In this paper, we prove the existence and regularity of solutions for a class of nonlinear anisotropic degenerate elliptic equations with the data f belonging to certain Marcinkiewicz spaces Mm(Ω) with m > 1.
Hichem
doaj   +1 more source

Generalized Keller–Osserman Conditions for Fully Nonlinear Degenerate Elliptic Equations [PDF]

open access: yes, 2022
We discuss the existence of entire (i.e. defined on the whole space) subsolutions of fully nonlinear degenerate elliptic equations, giving necessary and sufficient conditions on the coefficients of the lower order terms which extend the classical Keller ...
Leoni F., Dolcetta I. C., Vitolo A.
core   +2 more sources

Existence Results For A Class Of Nonlinear Degenerate Elliptic Equations

open access: yesMoroccan Journal of Pure and Applied Analysis, 2019
In this paper we are interested in the existence of solutions for Dirichlet problem associated with the degenerate nonlinear elliptic ...
Cavalheiro Albo Carlos
doaj   +1 more source

Weighted W1, p (·)-Regularity for Degenerate Elliptic Equations in Reifenberg Domains

open access: yesAdvances in Nonlinear Analysis, 2021
Let w be a Muckenhoupt A2(ℝn) weight and Ω a bounded Reifenberg flat domain in ℝn. Assume that p (·):Ω → (1, ∞) is a variable exponent satisfying the log-Hölder continuous condition.
Zhang Junqiang, Yang Dachun, Yang Sibei
doaj   +1 more source

Unique normal forms near a degenerate elliptic fixed point in two-parametric families of area-preserving maps [PDF]

open access: yes, 2014
We derive simplified normal forms for an area-preserving map in a neighbourhood of a degenerate resonant elliptic fixed point. Such fixed points appear in generic families of area-preserving maps. We also derive a simplified normal form for a generic two-
Gelfreikh, Natalia, Gelfreich, Vassili
core   +1 more source

Gradient bounds for solutions of nonlinear strictly elliptic equations, applications and extensions

open access: yesITM Web of Conferences, 2018
In this short manuscript, we briefly recall some well-known methods for obtaining gradient bounds of viscosity solutions for elliptic and parabolic equations.
Duc Nguyen Vinh
doaj   +1 more source

An oscillation theorem for the nonlinear degenerate elliptic equation in the Heisenberg group

open access: yesBoundary Value Problems, 2021
The aim of this paper is to study the oscillation of solutions of the nonlinear degenerate elliptic equation in the Heisenberg group H n $H^{n}$ . We first derive a critical inequality in H n $H^{n}$ . Based on it, we establish a Picone-type differential
Duan Wu, Pengcheng Niu
doaj   +1 more source

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