Results 11 to 20 of about 1,718,820 (284)

Weak Transversality and Partially Invariant Solutions [PDF]

open access: yesJournal of Mathematical Physics, 2002
New exact solutions are obtained for several nonlinear physical equations, namely the Navier-Stokes and Euler systems, an isentropic compressible fluid system and a vector nonlinear Schroedinger equation.
A. M. Grundland   +38 more
core   +4 more sources

Existence of nontrivial weak solutions for a quasilinear Choquard equation [PDF]

open access: yesJournal of Inequalities and Applications, 2018
We are concerned with the following quasilinear Choquard equation: −Δpu+V(x)|u|p−2u=λ(Iα∗F(u))f(u)in RN,F(t)=∫0tf(s)ds, $$ -\Delta_{p} u+V(x)|u|^{p-2}u=\lambda\bigl(I_{\alpha} \ast F(u)\bigr)f(u) \quad \text{in } \mathbb {R}^{N}, \qquad F(t)= \int_{0}^{t}
Jongrak Lee   +3 more
doaj   +2 more sources

Time—periodic weak solutions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
In continuing from previous papers, where we studied the existence and uniqueness of the global solution and its asymptotic behavior as time t goes to infinity, we now search for a time-periodic weak solution u(t) for the equation whose weak formulation ...
Eliana Henriques de Brito
doaj   +2 more sources

On the solvability of Dirichlet problem for the weighted p-Laplacian [PDF]

open access: yesOpuscula Mathematica, 2012
The paper investigates the existence and uniqueness of weak solutions for a non-linear boundary value problem involving the weighted \(p\)-Laplacian. Our approach is based on variational principles and representation properties of the associated spaces.
Ewa Szlachtowska
doaj   +1 more source

A variational approach for mixed elliptic problems involving the p-Laplacian with two parameters

open access: yesBoundary Value Problems, 2022
By exploiting an abstract critical-point result for differentiable and parametric functionals, we show the existence of infinitely many weak solutions for nonlinear elliptic equations with nonhomogeneous boundary conditions. More accurately, we determine
Armin Hadjian, Juan J. Nieto
doaj   +1 more source

Weak solutions to the time-fractional g-Bénard equations

open access: yesBoundary Value Problems, 2022
The Bénard problem consists in a system that couples the well-known Navier–Stokes equations and an advection-diffusion equation. In thin varying domains this leads to the g-Bénard problem, which turns out to be the classical Bénard problem when g is ...
Khadija Aayadi   +3 more
doaj   +1 more source

Weak-very weak uniqueness to the time-dependent Ginzburg–Landau model for superconductivity in Rn

open access: yesResults in Applied Mathematics, 2021
In this paper, we consider the n(n≥3)dimensional time-dependent Ginzburg–Landau model for superconductivity. First, we obtain a global existence of very weak solutions. Finally we prove a result of weak-very weak uniqueness.
Hongjun Gao, Jishan Fan, Gen Nakamura
doaj   +1 more source

Harmonic solutions and weak solutions of two-dimensional rotational incompressible Euler equations

open access: yesPartial Differential Equations in Applied Mathematics, 2022
In this paper, two families of exact solutions to two-dimensional incompressible rotational Euler equations are constructed by connecting the Euler equations with the Laplace equation via a stream function.
Yang Chen, Yunhu Wang, Manwai Yuen
doaj   +1 more source

Relaxation and weak solutions of nonlocal semilinear evolution systems

open access: yesAdvances in Difference Equations, 2019
We give a relatively short proof of the fact that the solution set of a nonlocal semilinear differential inclusion is dense in the weak solution set of the corresponding convexified system.
N. Javaid   +3 more
doaj   +1 more source

Weak solutions to Allen-Cahn-like equations modelling consolidation of porous media [PDF]

open access: yes, 2016
We study the weak solvability of a system of coupled Allen--Cahn--like equations resembling cross--diffusion which is arising as a model for the consolidation of saturated porous media.
Cirillo, Emilio Nicola Maria   +2 more
core   +2 more sources

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