Results 51 to 60 of about 31,295 (230)

Gevrey smoothing for weak solutions of the fully nonlinear homogeneous Boltzmann and Kac equations without cutoff for Maxwellian molecules [PDF]

open access: yes, 2015
It has long been suspected that the non-cutoff Boltzmann operator has similar coercivity properties as a fractional Laplacian. This has led to the hope that the homogenous Boltzmann equation enjoys similar regularity properties as the heat equation with ...
Barbaroux, Jean-Marie   +3 more
core   +3 more sources

Overdetermined problems with fractional laplacian [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2015
Added a missing assumption (1.3) in Theorem 1.1 and Theorem 1.2, which is used in the proof of Lemma 4 ...
Sven Jarohs, Mouhamed Moustapha Fall
openaire   +3 more sources

A mixed operator approach to peridynamics

open access: yesMathematics in Engineering, 2023
In the present paper we propose a model describing the nonlocal behavior of an elastic body using a peridynamical approach. Indeed, peridynamics is a suitable framework for problems where discontinuities appear naturally, such as fractures, dislocations,
Federico Cluni   +4 more
doaj   +1 more source

Fractional conformal Laplacians and fractional Yamabe problems [PDF]

open access: yesAnalysis & PDE, 2013
Based on the relations between scattering operators of asymptotically hyperbolic metrics and Dirichlet-to-Neumann operators of uniformly degenerate elliptic boundary value problems, we formulate fractional Yamabe problems that include the boundary Yamabe problem studied by Escobar.
González Nogueras, María del Mar   +1 more
openaire   +7 more sources

Solutions for the Problems Involving Fractional Laplacian and Indefinite Potentials

open access: yesAdvanced Nonlinear Studies, 2017
In this paper, we consider a class of Schrödinger equations involving fractional Laplacian and indefinite potentials. By modifying the definition of the Nehari–Pankov manifold, we prove the existence and asymptotic behavior of least energy solutions.
Tang Zhongwei, Wang Lushun
doaj   +1 more source

Point-like perturbed fractional Laplacians through shrinking potentials of finite range

open access: yes, 2018
We reconstruct the rank-one, singular (point-like) perturbations of the $d$-dimensional fractional Laplacian in the physically meaningful norm-resolvent limit of fractional Schr\"{o}dinger operators with regular potentials centred around the perturbation
Michelangeli, Alessandro   +1 more
core   +1 more source

Global Heat Kernel Estimates for Fractional Laplacians in Unbounded Open Sets [PDF]

open access: yes, 2009
In this paper, we derive global sharp heat kernel estimates for symmetric alpha-stable processes (or equivalently, for the fractional Laplacian with zero exterior condition) in two classes of unbounded C^{1,1} open sets in R^d: half-space-like open sets ...
Chen, Zhen-Qing, Tokle, Joshua
core   +3 more sources

A Modular Approach to Asymmetric Mg(I) Complexes Using a Unique Cyclopentadienyl Mg(I) Complex

open access: yesAngewandte Chemie, EarlyView.
Like changing the tire of a car: The synthesis of a unique MgI complex with a Cp* ligand enabled facile ligand exchange by salt metathesis, giving access to a first aryloxide‐stabilized MgI complex. This concept paves the way for the syntheses of a large variety of asymmetric MgI dimers in which one of the MgI centres is stabilized by a non‐nitrogen ...
Hannah Stecher   +6 more
wiley   +2 more sources

A note on the existence and multiplicity of solutions for sublinear fractional problems

open access: yesBoundary Value Problems, 2017
In this paper, we study the existence of weak solutions for fractional p-Laplacian equations with sublinear growth and oscillatory behavior as the following L K p u = λ f ( x , u ) in  Ω , u = 0 in  R N ∖ Ω , $$ \begin{aligned} &\mathcal{L}^{p}_{K}u ...
Yongqiang Fu
doaj   +1 more source

Numerical Methods for the Fractional Laplacian: a Finite Difference-quadrature Approach

open access: yes, 2014
The fractional Laplacian $(-\Delta)^{\alpha/2}$ is a non-local operator which depends on the parameter $\alpha$ and recovers the usual Laplacian as $\alpha \to 2$.
Huang, Yanghong, Oberman, Adam
core   +1 more source

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