Results 21 to 30 of about 26,844 (257)

Anisotropic regularity principle in sequence spaces and applications [PDF]

open access: yesCommunications in Contemporary Mathematics, 2018
We refine a recent technique introduced by Pellegrino, Santos, Serrano and Teixeira and prove a quite general anisotropic regularity principle in sequence spaces. As applications, we generalize previous results of several authors regarding Hardy–Littlewood inequalities for multilinear forms.
Albuquerque, Nacib, Rezende, Lisiane
openaire   +2 more sources

Enforcing the non-negativity constraint and maximum principles for diffusion with decay on general computational grids [PDF]

open access: yes, 2010
In this paper, we consider anisotropic diffusion with decay, and the diffusivity coefficient to be a second-order symmetric and positive definite tensor.
Arnold   +65 more
core   +1 more source

Directional Multifractal Analysis in the Lp Setting

open access: yesJournal of Function Spaces, 2019
The classical Hölder regularity is restricted to locally bounded functions and takes only positive values. The local Lp regularity covers unbounded functions and negative values. Nevertheless, it has the same apparent regularity in all directions. In the
Mourad Ben Slimane   +4 more
doaj   +1 more source

Embedding of vector-valued Morrey spaces and separable differential operators [PDF]

open access: yesBulletin of Mathematical Sciences, 2019
The paper is the first part of a program devoted to the study of the behavior of operator-valued multipliers in Morrey spaces. Embedding theorems and uniform separability properties involving E-valued Morrey spaces are proved.
Maria Alessandra Ragusa, Veli Shakhmurov
doaj   +1 more source

Spectral analysis of Morse-Smale flows I: construction of the anisotropic spaces [PDF]

open access: yes, 2018
We prove the existence of a discrete correlation spectrum for Morse-Smale flows acting on smooth forms on a compact manifold. This is done by constructing spaces of currents with anisotropic Sobolev regularity on which the Lie derivative has a discrete ...
Dang, Nguyen Viet, Riviere, Gabriel
core   +7 more sources

Partial Regularity Under Anisotropic (p, q) Growth Conditions

open access: yesJournal of Differential Equations, 1994
Let \(\Omega\) be an open subset of \(\mathbb{R}^ n\), \(f: \mathbb{R}^{n\cdot N}\to \mathbb{R}\) be a function of class \(C^ 2\) satisfying the inequality \(|\xi|^ p\leq f(\xi)\leq C(1+ |\xi|^ q)\) for any \(\xi\in \mathbb{R}^{n\cdot N}\), and set \[ F(u)= \int_ \Omega f(Du)dx \] for any \(u\in W^{1,p}(\Omega,\mathbb{R}^ N)\).
E. ACERBI, FUSCO, NICOLA
openaire   +3 more sources

Uniqueness of Closed Equilibrium Hypersurfaces for Anisotropic Surface Energy and Application to a Capillary Problem

open access: yesMathematical and Computational Applications, 2019
We study a variational problem for hypersurfaces in the Euclidean space with an anisotropic surface energy. An anisotropic surface energy is the integral of an energy density that depends on the surface normal over the considered hypersurface, which was ...
Miyuki Koiso
doaj   +1 more source

Wulff shape characterizations in overdetermined anisotropic elliptic problems [PDF]

open access: yes, 2017
We study some overdetermined problems for possibly anisotropic degenerate elliptic PDEs, including the well-known Serrin's overdetermined problem, and we prove the corresponding Wulff shape characterizations by using some integral identities and just one
Bianchini, Chiara, Ciraolo, Giulio
core   +2 more sources

Generation of anisotropic-smoothness regularization filters for EIT [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2002
In the inverse conductivity problem, as in any ill-posed inverse problem, regularization techniques are necessary in order to stabilize inversion. A common way to implement regularization in electrical impedance tomography is to use Tikhonov regularization.
Borsic, Andrea   +2 more
openaire   +2 more sources

An overdetermined problem for the anisotropic capacity [PDF]

open access: yes, 2016
We consider an overdetermined problem for the Finsler Laplacian in the exterior of a convex domain in $\mathbb{R}^N$, establishing a symmetry result for the anisotropic capacitary potential. Our result extends the one of W. Reichel [Arch.
Bianchini, Chiara   +2 more
core   +2 more sources

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