Results 11 to 20 of about 718,701 (250)

Orlicz boundedness for certain classical operators [PDF]

open access: yes, 2002
Let ɸ and ψ be functions defined on [0,∞) taking the value zero at zero and with non-negative continuous derivative. Under very mild extra assumptions we find necessary and sufficient conditions for the fractional maximal operator M∞Ω, associated to an ...
Harboure, Eleonor Ofelia   +2 more
core   +1 more source

Fuzzy optimization for portfolio selection based on Embedding Theorem in Fuzzy Normed Linear Spaces

open access: yesOrganizacija, 2014
Background: This paper generalizes the results of Embedding problem of Fuzzy Number Space and its extension into a Fuzzy Banach Space C(Ω) × C(Ω), where C(Ω) is the set of all real-valued continuous functions on an open set Ω.
Solatikia Farnaz   +2 more
doaj   +1 more source

Trace de Cauchy pour certaines fonctions localement intégrables sur un ouvert borné de C [PDF]

open access: yes, 2004
Let Ω be a bounded open subset of C, and let f be a distribution on Ω such that ∂f is a Radon measure of finite total mass. By means of the Cauchy transform, we introduce the "Cauchy trace" of f, which takes values in the set of analytic functionals on ...
Harlouchet, Iban
core   +2 more sources

Sharp upper bounds for a variational problem with singular perturbation [PDF]

open access: yes, 2007
Let Ω be a C 2 bounded open set of and consider the functionals We prove that if , |∇ u| = 1 a.e., and ∇ u∈BV, then The new result is the Γ- lim sup ...
Conti, S, De Lellis, C
core   +1 more source

Existence of insensitizing controls for a semilinear heat equation with a superlinear nonlinearity [PDF]

open access: yes, 2004
In this paper we consider a semilinear heat equation (in a bounded domain Ω of IRN ) with a nonlinearity that has a superlinear growth at infinity. We prove the existence of a control, with support in an open set ω ⊂ Ω, that insensitizes the L2−norm ...
Bodart, Olivier   +2 more
core   +1 more source

Moderately close Neumann inclusions for the Poisson equation [PDF]

open access: yes, 2018
open2siWe investigate the behavior of the solution of a mixed problem for the Poisson equation in a domain with two moderately close holes. If ϱ1 and ϱ2 are two positive parameters, we define a perforated domain Ω(ϱ1,ϱ2) by making two small perforations ...

core   +1 more source

Controllability of the Strongly Damped Wave Equation with Impulses and Delay

open access: yesNonautonomous Dynamical Systems, 2017
Evading fixed point theorems we prove the interior approximate controllability of the following semilinear strongly damped wave equation with impulses and delay in the space Z1/2 = D((−Δ)1/2)×L2(Ω),where r > 0 is the delay, Γ = (0, τ)×Ω, ∂Γ = (0, τ ...
Leiva Hugo
doaj   +1 more source

Wave Front Sets with respect to the Iterates of an Operator with Constant Coefficients

open access: yesAbstract and Applied Analysis, 2014
We introduce the wave front set WF*P(u) with respect to the iterates of a hypoelliptic linear partial differential operator with constant coefficients of a classical distribution u∈𝒟′(Ω) in an open set Ω in the setting of ultradifferentiable classes of ...
C. Boiti, D. Jornet, J. Juan-Huguet
doaj   +1 more source

Steiner symmetry in the minimization of the first eigenvalue in problems involving the p-Laplacian [PDF]

open access: yes, 2016
Let Ω ⊂ ℝN be an open bounded connected set. We consider the eigenvalue problem −Δpu = λρ|u|p−2u in Ω with homogeneous Dirichlet boundary condition, where Δp is the p-Laplacian operator and ρ is an arbitrary function that takes only two given values 0 ...
Anedda, Claudia, Cuccu, Fabrizio
core   +1 more source

Certain invariant subspaces for operators with rich eigenvalues

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
For a connected open subset Ω of the plane and n a positive integer, let Bn(Ω) be the space introduced by Cowen and Douglas. In this article we study the spectrum of restrictions of T in order to obtain more information about the invariant subspaces of T.
Karim Seddighi
doaj   +1 more source

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