Results 21 to 30 of about 321,760 (289)

Anisotropic Besov regularity of parabolic PDEs

open access: yesCoRR, 2021
This paper is concerned with the regularity of solutions to parabolic evolution equations. Special attention is paid to the smoothness in the specific anisotropic scale $\ B^{r\mathbf{a}}_{τ,τ}, \ \frac{1}τ=\frac{r}{d}+\frac{1}{p}\ $ of Besov spaces where $\mathbf{a}$ measures the anisotropy.
Stephan Dahlke, Cornelia Schneider
openaire   +2 more sources

Moments of the Anisotropic Regularized κ-distributions [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract For collisionless (or collision-poor) plasma populations, which are well described by the κ-distribution functions (also known as the Kappa or Lorentzian power-laws), a macroscopic interpretation has remained largely questionable, especially because of the diverging moments of these distributions.
Klaus Scherer   +3 more
openaire   +2 more sources

Anisotropic function spaces and maximal regularity for parabolic problems. Part 1 [PDF]

open access: yes, 2010
In this first part of a treatise on maximal regularity for linear parabolic systems we provide an in-depth investigation of anisotropic function spaces. Special attention is given to trace and extension theorems on hyper-planes and corners.
Amann, H
core   +3 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.
Andrea Borsic   +2 more
openaire   +3 more sources

Note on solution regularity of the generalized magnetohydrodynamic equations with partial dissipation [PDF]

open access: yes, 2013
In this brief note we study the n-dimensional magnetohydrodynamic equations with hyper-viscosity and zero resistivity.
Tran, Chuong Van   +6 more
core   +1 more source

On the uniqueness and regularity of the Primitive Equations imposing additional anisotropic regularity

open access: yesApplied Mathematics Letters, 2005
In this note, we prove that given u a weak solution of the Primitive Equations, imposing an additional condition on the vertical derivative of the velocity u (concretely ∂zu ∈ L∞(0, T;L2(Ω)) ∩ L2(0, T; H1(Ω))), then two different results hold; namely, uniqueness of weak solution (any weak solution associated to the same data that u must coincide with u)
Francisco Guillén-González   +1 more
openaire   +5 more sources

Flows of singular vector fields and applications to fluid and kinetic equations [PDF]

open access: yes, 2015
Several physical phenomena arising in fluid dynamics and kinetic equations can be modeled by nonlinear transport PDE. Such quantities are the vorticity of a fluid, or the density of a collection of particles advected by a velocity field which is highly ...
Bohun, Anna
core   +1 more source

The anisotropic Cahn--Hilliard equation: regularity theory and strict separation properties [PDF]

open access: yes, 2023
The Cahn--Hilliard equation with anisotropic energy contributions frequently appears in many physical systems. Systematic analytical results for the case with the relevant logarithmic free energy have been missing so far.
Garcke, Harald   +2 more
core   +1 more source

Anisotropic singular logistic equations [PDF]

open access: yesOpuscula Mathematica
We consider a parametric Dirichlet problem driven by the anisotropic \((p,q)\)-Laplacian and a reaction with a singular term and a superdiffusive logistic perturbation.
João Pablo Pinheiro Da Silva   +3 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy