Results 51 to 60 of about 61,340 (312)
Nonexistence of small, odd breathers for a class of nonlinear wave equations
, 2016 In this note, we show that for a large class of nonlinear wave equations with odd nonlinearities, any globally defined odd solution which is small in the energy space decays to $0$ in the local energy norm.
Kowalczyk, Michał +2 more
core +2 more sources
The nonexistence of regularization operators
Journal of Mathematical Analysis and Applications, 2003 AbstractWe show that there are no continuous regularization procedures for the extension of distributions. We also show that there are no continuous projection operators from the spaces of distributions onto subspaces of distributions with support on a given closed set.
openaire +2 more sources
The nonexistence of quasi-Einstein metrics [PDF]
Pacific Journal of Mathematics, 2010 We study complete Riemannian manifolds satisfying the equation $Ric+\nabla^2 f-\frac{1}{m}df\otimes df=0$ by studying the associated PDE $ _f f + m e^{2f/m}=0$ for $ \leq 0$. By developing a gradient estimate for $f$, we show there are no nonconstant solutions.
openaire +4 more sources
Advanced Intelligent Discovery, EarlyView.Combining machine learning and probabilistic statistical learning is a powerful way to discover and design new materials. A variety of machine learning approaches can be used to identify promising candidates for target applications, and causal inference can help identify potential ways to make them a reality.
Jonathan Y. C. Ting, Amanda S. Barnard
wiley +1 more source
Nonexistence of positive solutions for a nonpositone system in a ball
Electronic Journal of Differential Equations, 2015 In this article, we prove the nonexistence of positive solutions for a nonpositone system in a ball when the nonlinearities may have more than one zero.
Said Hakimi
doaj
Liouville property of fractional Lane-Emden equation in general unbounded domain
Advances in Nonlinear Analysis, 2020 Our purpose of this paper is to consider Liouville property for the fractional Lane-Emden ...
Wang Ying, Wei Yuanhong
doaj +1 more source
Nonexistence of an integral of the 6th degree in momenta for the Zipoy-Voorhees metric
, 2011 We prove nonexistence of a nontrivial integral that is polynomial in momenta of degree less than 7 for the Zipoy-Voorhees spacetime with the parameter $\delta=2$Comment: 7 pages, no ...
Boris S. Kruglikov +3 more
core +1 more source
Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions
Advanced Intelligent Systems, EarlyView.Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley +1 more source
Electronic Journal of Differential Equations, 2011 We obtain the existence and multiplicity of positive $T$-periodic solutions for the difference equations $$ Delta x(n)=a(n,x(n))-lambda b(n)f(x(n-au(n))) $$ and $$ Delta x(n)+a(n,x(n))=lambda b(n)f(x(n-au(n))), $$ where $f(cdot)$ may be singular
Yanqiong Lu
doaj
Fixation for coarsening dynamics in 2D slabs
, 2013 For the zero temperature limit of Ising Glauber Dynamics on 2D slabs the existence or nonexistence of vertices that do not fixate is determined as a function of slab thickness.Comment: 16 pages, 9 ...
Damron, Michael +3 more
core +1 more source