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We investigate Lawruk elliptic boundary-value problems for homogeneous differential equations in a two-sided refined Sobolev scale. These problems contain additional unknown functions in the boundary conditions of arbitrary orders. The…

Analysis of PDEs · Mathematics 2018-12-31 Anna Anop

We develop a variational method to obtain accurate bounds for the eigenenergies of H = -Delta + V in arbitrary dimensions N>1, where V(r) is the nonpolynomial oscillator potential V(r) = r^2 + lambda r^2/(1+gr^2), lambda in…

Mathematical Physics · Physics 2009-11-11 Nasser Saad , Richard L. Hall , Hakan Ciftci

We study multidimensional difference equations with a continual variable in the Sobolev--Slobodetskii spaces. Using ideas and methods of the theory of boundary value problems for elliptic pseudo differential equations we suggest to consider…

Analysis of PDEs · Mathematics 2015-11-11 Alexander Vasilyev , Vladimir Vasilyev

In this paper, we consider a new class of multi phase operators with variable exponents, which reflects the inhomogeneous characteristics of hardness changes when multiple different materials are combined together. We at first deal with the…

Analysis of PDEs · Mathematics 2024-07-22 Guowei Dai , Francesca Vetro

We analyze a convex stochastic optimization problem where the state is assumed to belong to the Bochner space of essentially bounded random variables with images in a reflexive and separable Banach space. For this problem, we obtain…

Optimization and Control · Mathematics 2022-09-21 Caroline Geiersbach , Winnifried Wollner

We address the problem of optimal scale-dependent parameter learning in total variation image denoising. Such problems are formulated as bilevel optimization instances with total variation denoising problems as lower-level constraints. For…

Optimization and Control · Mathematics 2021-07-20 Juan Carlos De los Reyes , David Villacís

This is a simplification of our prior work on the existence theory for the Rosseland-type equations. Inspired by the Rosseland equation in the conduction-radiation coupled heat transfer, we use the locally arbitrary growth conditions…

Analysis of PDEs · Mathematics 2012-05-14 Zhang Qiao-fu

The continuous dependence of solutions to certain (non-autonomous, partial, integro-differential-algebraic, evolutionary) equations on the coefficients is addressed. We give criteria that guarantee that convergence of the coefficients in…

Functional Analysis · Mathematics 2016-01-21 Marcus Waurick

This paper studies the initial-boundary-value problem (IBVP) of a nonlinear Schr\"odinger equation posed on a strip domain $\mathbb{R}\times[0,1]$ with non-homogeneous Dirichlet boundary conditions. For any $s\ge0$, if the initial data…

Analysis of PDEs · Mathematics 2017-02-10 Yu Ran , Shu-Ming Sun

(Two-scale) gradient Young measures in Orlicz-Sobolev setting are introduced and characterized providing also an integral representation formula for non convex energies arising in homogenization problems with nonstandard growth.

Analysis of PDEs · Mathematics 2024-07-08 Joel Fotso Tachago , Hubert Nnang , Franck Tchinda , Elvira Zappale

In this paper we study an optimal shape design problem for the first eigenvalue of the fractional $p-$laplacian with mixed boundary conditions. The optimization variable is the set where the Dirichlet condition is imposed (that is…

Analysis of PDEs · Mathematics 2017-02-15 Julian Fernandez Bonder , Julio D. Rossi , Juan F. Spedaletti

We develop a comprehensive study on sharp potential type Riemannian Sobolev inequalities of order 2 by means of a local geometric Sobolev inequality of same kind and suitable De Giorgi-Nash-Moser estimates. In particular we discuss…

Analysis of PDEs · Mathematics 2010-11-29 Ezequiel R. Barbosa , Marcos Montenegro

We study the optimization of Steklov eigenvalues with respect to a boundary density function $\rho$ on a bounded Lipschitz domain $\Omega \subset \mathbb{R}^N$. We investigate the minimization and maximization of $\lambda_k(\rho)$, the…

Optimization and Control · Mathematics 2026-04-10 Chiu Yen Kao , Seyyed Abbas Mohammadi

In this paper we consider the initial boundary value problem (IBVP) for the nonlinear biharmonic Schr\"odinger equation posed on a bounded interval $(0,L)$ with non-homogeneous Navier or Dirichlet boundary conditions, respectively. For…

Functional Analysis · Mathematics 2021-06-24 Junfeng Li , Chuang Zheng

This work aims to provide a comprehensive and unified numerical analysis for non linear system of parabolic variational inequalities (PVIs) subject to Dirichlet boundary condition. This analysis enables us to establish an existence of the…

Analysis of PDEs · Mathematics 2021-11-30 Yahya Alnashri

We derive novel algorithms for optimization problems constrained by partial differential equations describing multiscale particle dynamics, including non-local integral terms representing interactions between particles. In particular, we…

Numerical Analysis · Mathematics 2021-09-09 Mildred Aduamoah , Benjamin D. Goddard , John W. Pearson , Jonna C. Roden

The homogenization of eigenvalues of non-Hermitian Maxwell operators is studied by the H-convergence method. It is assumed that the Maxwell systems are equipped with suitable m-dissipative boundary conditions, namely, with Leontovich or…

Analysis of PDEs · Mathematics 2026-01-23 Matthias Eller , Illya M. Karabash

This paper studies a space-inhomogeneous Boltzmann-Nordheim equation with pseudo-Maxwellian forces. Strong solutions are obtained for the Cauchy problem in a setting with large bounded L1 initial data. The main results are existence,…

Mathematical Physics · Physics 2016-11-23 Leif Arkeryd , Anne Nouri

We prove homogenization for a class of nonconvex (possibly degenerate) viscous Hamilton-Jacobi equations in stationary ergodic random environments in one space dimension. The results concern Hamiltonians of the form $G(p)+V(x,\omega)$,…

Analysis of PDEs · Mathematics 2022-07-05 Andrea Davini , Elena Kosygina

We investigate the initial value problem for a semilinear heat equation with exponential-growth nonlinearity in two space dimension. First, we prove the local existence and unconditional uniqueness of solutions in the Sobolev space…

Analysis of PDEs · Mathematics 2010-08-17 Slim Ibrahim , Rym Jrad , Mohamed Majdoub , Tarek Saanouni