Results 21 to 30 of about 1,391,367 (292)

On the stability of φ-uniform domains [On the stability of phi-uniform domains]

open access: yesMonatshefte für Mathematik, 2013
In this paper, \(\varphi\)-uniform domains are studied. Before giving below the definition of a \(\varphi\)-uniform domain, let me give more details about some of the obtained results. Given a \(\varphi\)-uniform domain \(G\), sufficient conditions on a subset \(E\subset G\) are given such that \(G\setminus E\) is \(\varphi'\)-uniform for some ...
Vuorinen Matti Keijo Kustaa   +1 more
openaire   +2 more sources

Uniform stability of (a,k)-regularized families

open access: yesAsymptotic Analysis, 2013
In this article we study the uniform stability of an (a,k)-regularized family {S(t)}t≥0 generated by a closed operator A. We give sufficient conditions, on the scalar kernels a, k and the operator A, to ensure the uniform stability of the family {S(t)}t≥0 in Hilbert spaces. Our main result is a generalization of Theorem 1 in [Proc. Amer. Math.
Carlos Lizama   +2 more
openaire   +3 more sources

Finite and uniform stability of sphere coverings [PDF]

open access: yesDiscrete & Computational Geometry, 1995
A ball covering of Euclidean \(d\)-space \(E^d\) is called \(n\)-stable if no subset of \(n\) balls can be moved such that the covering property is maintained. The covering is said to be finitely stable if it is \(n\)- stable for every positive integer \(n\).
András Bezdek   +2 more
openaire   +2 more sources

Uniform Regularity of Set-Valued Mappings and Stability of Implicit Multifunctions [PDF]

open access: yesJournal of Nonsmooth Analysis and Optimization, 2021
We propose a unifying general (i.e. not assuming the mapping to have any particular structure) view on the theory of regularity and clarify the relationships between the existing primal and dual quantitative sufficient and necessary conditions including ...
Nguyen Duy Cuong, Alexander Y. Kruger
doaj   +1 more source

Uniform K-stability, Duistermaat-Heckman measures and singularities of pairs [PDF]

open access: yes, 2016
The purpose of the present paper is to set up a formalism inspired from non-Archimedean geometry to study K-stability. We first provide a detailed analysis of Duistermaat-Heckman measures in the context of test configurations, characterizing in ...
Boucksom, Sébastien   +2 more
core   +3 more sources

On the stability of $ϕ$-uniform domains

open access: yes, 2008
We study two metrics, the quasihyperbolic metric and the distance ratio metric of a subdomain $G \subset {\mathbb R}^n$. In the sequel, we investigate a class of domains, so called $φ$-uniform domains, defined by the property that these two metrics are comparable with respect to a homeomorphism $φ$ from $[0,\infty)$ to itself.
Klén, R.   +3 more
openaire   +2 more sources

Necessary and sufficient conditions for uniform stability of Volterra integro-dynamic equations using new resolvent equation

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
We consider the system of Volterra integro-dynamic ...
Advar Murat, Raffoul Youssef N.
doaj   +1 more source

Influence of the number of predecessors in interaction within acceleration-based flow models

open access: yes, 2017
In this paper, the stability of the uniform solutions is analysed for microscopic flow models in interaction with $K\ge1$ predecessors. We calculate general conditions for the linear stability on the ring geometry and explore the results with particular ...
Chraibi, Mohcine   +3 more
core   +1 more source

Lyapunov functions for linear nonautonomous dynamical equations on time scales [PDF]

open access: yes, 2006
The existence of a Lyapunov function is established following a method of Yoshizawa for the uniform exponential asymptotic stability of the zero solution of a nonautonomous linear dynamical equation on a time scale with uniformly bounded ...
Kloeden, Peter E., Zmorzynska, Alexandra
core   +1 more source

Stable non-uniform black strings below the critical dimension

open access: yes, 2012
The higher-dimensional vacuum Einstein equation admits translationally non-uniform black string solutions. It has been argued that infinitesimally non-uniform black strings should be unstable in 13 or fewer dimensions and otherwise stable.
B Kleihaus   +22 more
core   +1 more source

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