Results 61 to 70 of about 939 (135)

Quasi‐conical domains with embedded eigenvalues

open access: yesBulletin of the London Mathematical Society, Volume 56, Issue 9, Page 2969-2981, September 2024.
Abstract The spectrum of the Dirichlet Laplacian on any quasi‐conical open set coincides with the non‐negative semi‐axis. We show that there is a connected quasi‐conical open set such that the respective Dirichlet Laplacian has a positive (embedded) eigenvalue.
David Krejčiřík, Vladimir Lotoreichik
wiley   +1 more source

Convergence of nonlinear semigroups under nonpositive curvature [PDF]

open access: yes, 2013
The present paper is devoted to semigroups of nonexpansive mappings on metric spaces of nonpositive curvature. We show that the Mosco convergence of a sequence of convex lsc functions implies convergence of the corresponding resolvents and convergence of
Bacak, Miroslav
core  

On the existence of energy‐variational solutions in the context of multidimensional incompressible fluid dynamics

open access: yesMathematical Methods in the Applied Sciences, Volume 47, Issue 6, Page 4319-4344, April 2024.
We define the concept of energy‐variational solutions for the Navier–Stokes and Euler equations and prove their existence in any space dimension. It is shown that the concept of energy‐variational solutions enjoys several desirable properties. Energy‐variational solutions are not only known to exist and coincide with local strong solutions, but the ...
Robert Lasarzik
wiley   +1 more source

Stable domains for higher order elliptic operators

open access: yesComptes Rendus. Mathématique
This paper is devoted to prove that any domain satisfying a $(\delta _0,r_0)$-capacitary condition of first order is automatically $(m,p)$-stable for all $m\geqslant 1$ and $p> 1$, and for any dimension $N\geqslant 1$.
Grosjean, Jean-François   +2 more
doaj   +1 more source

The role of interplay between coefficients in the $G$-convergence of some elliptic equations

open access: yes, 2016
We study the behavior of the solutions $u$ of the linear Dirichlet problems $- \mathrm{div} (M(x) \nabla u) + a(x) u = f(x)$ with respect to perturbations of the matrix $M(x)$ (with respect to the $G$-convergence) and with respect to perturbations of the
Boccardo, Lucio   +2 more
core   +1 more source

Mosco convergence in locally convex spaces

open access: yesJournal of Functional Analysis, 1992
Given a dual pair \(E\), \(F\) of locally convex spaces, each with its corresponding weak topology \(\sigma\) and Mackey topology \(\tau\), one says that a sequence \(\{f_ n\}\) of functions \(E\to [-\infty,\infty]\) (or \(F\to [-\infty,\infty]\)) is Mosco-convergent to a function \(f_ 0\) if the following conditions are satisfied for each \(v\) in \(E\
openaire   +2 more sources

Existence of continuous solutions to evolutionary quasi-variational inequalities with applications

open access: yesLe Matematiche, 2007
The author presents dynamic elastic traffic equilibrium problems with data depending explicitly on time and studies under which assumptions the continuity of solutions with respect to the time can be ensured.
Annamaria Barbagallo
doaj  

A skew stochastic heat equation

open access: yes, 2011
We consider a stochastic heat equation driven by a space-time white noise and with a singular drift, where a local-time in space appears. The process we study has an explicit invariant measure of Gibbs type, with a non-convex potential.
Bounebache, Said Karim   +1 more
core  

Unilateral problems for quasilinear operators with fractional Riesz gradients

open access: yesAdvances in Nonlinear Analysis
In this work, we develop the classical theory of monotone and pseudomonotone operators in the class of convex-constrained Dirichlet-type problems involving fractional Riesz gradients in bounded and in unbounded domains Ω⊂Rd\Omega \subset {{\mathbb{R ...
Campos Pedro Miguel   +1 more
doaj   +1 more source

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