Results 11 to 20 of about 3,933 (187)

Existence of Positive Solutions for a Class of px,qx-Laplacian Elliptic Systems with Multiplication of Two Separate Functions

open access: yesComplexity, 2020
The paper deals with the study of the existence of weak positive solutions for a new class of the system of elliptic differential equations with respect to the symmetry conditions and the right hand side which has been defined as multiplication of two ...
Youcef Bouizem   +2 more
doaj   +2 more sources

Boundary spike‐layer solutions of the singular Keller–Segel system: existence and stability

open access: yesProceedings of the London Mathematical Society, Volume 122, Issue 1, Page 42-68, January 2021., 2021
Abstract We explore the existence and nonlinear stability of boundary spike‐layer solutions of the Keller–Segel system with logarithmic singular sensitivity in the half space, where the physical zero‐flux and Dirichlet boundary conditions are prescribed.
Jose A. Carrillo   +2 more
wiley   +1 more source

Combined effects in nonlinear problems arising in the study of anisotropic continuous media [PDF]

open access: yes, 2016
paper Abstract We are concerned with the Lane-Emden-Fowler equation − ∆ u = λk ( x ) u q ± h ( x ) u p in Ω, subject to the Dirichlet boundary condition u = 0 on ∂ Ω, where Ω is a smooth bounded domain in R N , k and h are variable potential functions ...
V. Ruadulescu, Dušan D. Repovš
semanticscholar   +1 more source

Application of the Nonlinear Steepest Descent Method to the Coupled Sasa-Satsuma Equation

open access: yes, 2021
We use spectral analysis to reduce Cauchy problem for the coupled SasaSatsuma equation to a 5 × 5 matrix Riemann-Hilbert problem. The upper and lower triangular factorisations of the jump matrix and a decomposition of the vector-valued spectral function ...
X. Geng
semanticscholar   +1 more source

Global Limit Theorem for Parabolic Equations with a Potential [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2021
We obtain the asymptotics, as t + |x| → ∞, of the fundamental solution to the heat equation with a compactly supported potential. It is assumed that the corresponding stationary operator has at least one positive eigenvalue.
L. Koralov, B. Vainberg
semanticscholar   +1 more source

General decay rate for a viscoelastic wave equation with distributed delay and Balakrishnan-Taylor damping

open access: yesOpen Mathematics, 2021
A nonlinear viscoelastic wave equation with Balakrishnan-Taylor damping and distributed delay is studied. By the energy method we establish the general decay rate under suitable hypothesis.
Choucha Abdelbaki   +2 more
doaj   +1 more source

Non-Degeneracy of Peak Solutions to the Schrödinger–Newton System

open access: yesAdvanced Nonlinear Studies, 2021
We are concerned with the following Schrödinger–Newton problem:
Guo Qing, Xie Huafei
doaj   +1 more source

A bound on the group velocity for Bloch wave packets [PDF]

open access: yes, 2015
We give a direct proof that the group velocities of Bloch wave packet solutions of periodic second order wave equations cannot exceed the maximal speed of propagation of the periodic wave ...
Allaire, Grégoire   +2 more
core   +1 more source

Reversed Stein–Weiss Inequalities with Poisson-Type Kernel and Qualitative Analysis of Extremal Functions

open access: yesAdvanced Nonlinear Studies, 2021
Through conformal map, isoperimetric inequalities are equivalent to the Hardy–Littlewood–Sobolev (HLS) inequalities involved with the Poisson-type kernel on the upper half space.
Tao Chunxia
doaj   +1 more source

Stability result for Lord Shulman swelling porous thermo-elastic soils with distributed delay term

open access: yesOpen Mathematics, 2023
The Lord Shulman swelling porous thermo-elastic soil system with the presence of a distributed delay term is studied in this work. We will establish the well-posedness of the system and the exponential stability of the system is derived.
Choucha Abdelbaki   +2 more
doaj   +1 more source

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