Results 71 to 80 of about 788 (140)

Attractors for Navier-Stokes flows with multivalued and nonmonotone subdifferential boundary conditions

, 2014
We consider two-dimensional nonstationary Navier-Stokes shear flow with multivalued and nonmonotone boundary conditions on a part of the boundary of the flow domain.
Kalita, P., Łukaszewicz, G.
core   +1 more source

Existence result for differential inclusion with p(x)-Laplacian [PDF]

, 2014
In this paper we study the nonlinear elliptic problem with p(x)-Laplacian (hemivariational inequality). We prove the existence of a nontrivial solution.
Barnaś, Sylwia
core   +1 more source

Numerical analysis of a non-clamped dynamic thermoviscoelastic contact problem

, 2019
In this work we analyze a non-clamped dynamic viscoelastic contact problem involving thermal effect. The friction law is described by a nonmonotone relation between the tangential stress and the tangential velocity.
Bartman, Piotr, Bartosz, Krzysztof, Jureczka, Michał, Szafraniec, Paweł   +3 more
core   +1 more source

Tykhonov well-posedness of elliptic variational-hemivariational inequalities

Electronic Journal of Differential Equations, 2019
We consider a class of elliptic variational-hemivariational inequalities in an abstract Banach space for which we introduce the concept of well-posedness in the sense of Tykhonov.
Mircea Sofonea, Yi-Bin Xiao
doaj  

Existence results and applications for general variational-hemivariational inequalities on unbounded domains

Electronic Journal of Differential Equations, 2009
In this paper we give an existence result for a class of variational-hemivariational inequality on unbounded domain using the mountain pass theorem and the principle of symmetric criticality for Motreanu-Panagiotopoulos type functionals.
Ildiko-Ilona Mezei, Lia Saplacan
doaj  

The Dirichlet problem for discontinuous perturbations of the mean curvature operator in Minkowski space [PDF]

, 2015
Using the critical point theory for convex, lower semicontinuous perturbations of locally Lipschitz functionals, we prove the solvability of the discontinuous Dirichlet problem involving the operator $u\mapsto{div} (\frac{\nabla u}{\sqrt{1-|\nabla u|^2}})
Bereanu, Cristian, Jebelean, Petru, Serban, Calin   +2 more
core  

Existence of solutions to hemivariational inequalities involving the p(x)-biharmonic operator

Electronic Journal of Differential Equations, 2015
This article concerns the existence of solutions to boundary-value problems involving the p(x)-biharmonic operator. Our technical approach is the variational-hemivariational inequality on bounded domains by using the mountain pass theorem and the ...
Mohsen Alimohammady, Fariba Fattahi
doaj  

A penalty method for history-dependent variational–hemivariational inequalities

Computers & Mathematics with Applications, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sofonea, Mircea, Migórski, Stanisław, Han, Weimin   +2 more
openaire   +4 more sources

On the Convergence of (Stochastic) Gradient Descent with Extrapolation for Non-Convex Optimization

, 2019
Extrapolation is a well-known technique for solving convex optimization and variational inequalities and recently attracts some attention for non-convex optimization. Several recent works have empirically shown its success in some machine learning tasks.
Jin, Rong, Xu, Yi, Yang, Sen, Yang, Tianbao, Yuan, Zhuoning   +4 more
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A Rothe method for a viscoelastic contact problem involving time-fractional derivatives in locking materials

Demonstratio Mathematica
This study examines a contact problem involving viscoelastic materials interacting with a rigid foundation. The constitutive relationship is derived from a time-fractional Kelvin–Voigt model.
Su Guangwang, Bouallala Mustapha, Chen Boling, Nguyen Van Thien   +3 more
doaj   +1 more source