Results 41 to 50 of about 15,100 (198)
Dynamic of a nonautonomous two-species impulsive competitive system with infinite delays
Open Mathematics, 2019 In this paper, we consider a nonautonomous two-species impulsive competitive system with infinite delays. By the impulsive comparison theorem and some mathematical analysis, we investigate the permanence, extinction and global attractivity of the system,
He Mengxin, Li Zhong, Chen Fengde
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Lie symmetries of (1+2) nonautonomous evolution equations in Financial Mathematics
, 2016 We analyse two classes of $(1+2)$ evolution equations which are of special interest in Financial Mathematics, namely the Two-dimensional Black-Scholes Equation and the equation for the Two-factor Commodities Problem.
Leach, P. G. L. +2 more
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Entropy of Nonautonomous Dynamical Systems [PDF]
, 2018 Different notions of entropy play a fundamental role in the classical theory of dynamical systems. Unlike many other concepts used to analyze autonomous dynamics, both measure-theoretic and topological entropy can be extended quite naturally to discrete-time nonautonomous dynamical systems given in the process formulation.
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Justice Between Coexisting Generations: Birth Cohorts or Age Groups?
Global Policy, EarlyView.ABSTRACT This paper will deal with intergenerational justice, focusing on the relationship between coexisting generations. The first section will be reserved for some conceptual clarifications on the concept of justice, on the distinction between age groups and birth cohorts, and on the specificity of age as a category for apportioning benefits and ...
Anna Elisabetta Galeotti
wiley +1 more source
Discrete Dynamics in Nature and Society, 2007 We considered a nonautonomous two dimensional predator-prey system with impulsive effect. Conditions for the permanence of the system and for the existence of a unique stable periodic solution are obtained.
Weibing Wang +2 more
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Results in Physics, 2023 This paper aims to analyze diverse excitations of partially nonlocal bright–dark Peregrine “three sisters” based on a nonautonomous (3+1)-dimensional vector partially nonlocal nonlinear Schrödinger equation with different diffractions in two horizontal ...
Yi-Xiang Chen
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On Minimality of Nonautonomous Dynamical Systems [PDF]
Nonlinear Oscillations, 2004 The minimality of a nonautonomous dynamical system given by a compact Hausdorff space X and a sequence of continuous self-maps of X is studied. A sufficient condition for the nonminimality of such a system is formulated. Special attention is given to the particular case where X is a real compact interval I.
Kolyada, S.F. +2 more
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The choice argument for proportional representation
American Journal of Political Science, EarlyView.Abstract What electoral system should a democracy choose? I argue for proportional representation (PR). My main empirical premise is Duverger's law: Under PR there are more viable candidates in district‐level elections than there are under single‐member plurality (SMP) systems.
Adam Lovett
wiley +1 more source
International Journal of Aerospace Engineering, 2016 The restricted three-body problem (R3BP) and restricted four-body problem (R4BP) are modeled based on the rotating frame. The conservative autonomous system for the R3BP and nonautonomous system with period parametric resonance due to the fourth body are
Ying-Jing Qian +3 more
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The Intestine as a Lifespan- and Proteostasis-Promoting Signaling Tissue
Frontiers in Aging, 2022 In multicellular organisms such as Caenorhabditis elegans, cellular stress stimuli and responses are communicated between tissues to promote organismal health- and lifespan.
Francesca Hodge +2 more
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