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Liouville Theorems for Fractional Parabolic Equations [PDF]

open access: yesAdvanced Nonlinear Studies, 2021
In this paper, we establish several Liouville type theorems for entire solutions to fractional parabolic equations. We first obtain the key ingredients needed in the proof of Liouville theorems, such as narrow region principles and maximum principles for
Chen Wenxiong, Wu Leyun
doaj   +6 more sources

On Cauchy–Liouville-type theorems

open access: yesAdvances in Nonlinear Analysis, 2017
In this paper we explore Liouville-type theorems to solutions of PDEs involving the ϕ-Laplace operator in the setting of Orlicz–Sobolev spaces. Our results extend Liouville-type theorems that have been obtained recently.
Araya Ataklti, Mohammed Ahmed
doaj   +4 more sources

Sharp Liouville Theorems [PDF]

open access: yesAdvanced Nonlinear Studies, 2021
Consider the equation div⁡(φ2⁢∇⁡σ)=0{\operatorname{div}(\varphi^{2}\nabla\sigma)=0} in ℝN{\mathbb{R}^{N}}, where φ>0{\varphi>0}. Berestycki, Caffarelli and Nirenberg proved in [H. Berestycki, L. Caffarelli and L. Nirenberg, Further qualitative properties
Villegas Salvador
doaj   +4 more sources

Weak Liouville-Arnol′d Theorems and Their Implications [PDF]

open access: yesCommunications in Mathematical Physics, 2012
This paper studies the existence of invariant smooth Lagrangian graphs for Tonelli Hamiltonian systems with symmetries. In particular, we consider Tonelli Hamiltonians with n independent but not necessarily involutive constants of motion and obtain two theorems reminiscent of the Liouville-Arnold theorem.
Butler, L. T, SORRENTINO, ALFONSO
openaire   +6 more sources

A Contribution of Liouville-Type Theorems to the Geometry in the Large of Hadamard Manifolds

open access: yesMathematics, 2022
A complete, simply connected Riemannian manifold of nonpositive sectional curvature is called a Hadamard manifold. In this article, we prove Liouville-type theorems for isometric and harmonic self-diffeomorphisms of Hadamard manifolds, as well as ...
Josef Mikeš   +2 more
doaj   +1 more source

Liouville Theorems for a Class of Linear Second-Order Operators with Nonnegative Characteristic Form

open access: yesBoundary Value Problems, 2007
We report on some Liouville-type theorems for a class of linear second-order partial differential equation with nonnegative characteristic form. The theorems we show improve our previous results.
Alessia Elisabetta Kogoj   +1 more
doaj   +2 more sources

Liouville’s theorem for generalized harmonic function [PDF]

open access: yesAnalysis and Mathematical Physics, 2020
In this paper, we give a more physical proof of Liouville's theorem for a class generalized harmonic functions by the method of parabolic equation.
Weihua Wang, Qihua Ruan
openaire   +2 more sources

Comparison and oscillation theorems for singular Sturm-Liouville operators [PDF]

open access: yesOpuscula Mathematica, 2014
We prove analogues of the classical Sturm comparison and oscillation theorems for Sturm-Liouville operators on a finite interval with real-valued distributional potentials.
Monika Homa, Rostyslav Hryniv
doaj   +1 more source

وجود الحلول الموجبة لمسائل القیم الحدودیة لمعادلة تفاضلیة لاخطیة من الرتب الکسریة [PDF]

open access: yesمجلة التربية والعلم, 2020
Recently boundary value problems for differential equations of non-integral order have studied in many papers ( see [1,2] ). Zaho etal [ 1 ] studied the following boundary value problem of fractional differential equations.
Noora Omar Aga
doaj   +1 more source

Complete Riemannian manifolds with Killing — Ricci and Codazzi — Ricci tensors

open access: yesДифференциальная геометрия многообразий фигур, 2022
The purpose of this paper is to prove of Liouville type theorems, i. e., theorems on the non-existence of Killing — Ric­ci and Codazzi — Ricci tensors on complete non-com­pact Riemannian manifolds.
S.E. Stepanov, I. I. Tsyganok, J. Mikeš
doaj   +1 more source

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