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zbMATH Open
Article . 2011
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https://dx.doi.org/10.48550/ar...
Article . 2011
License: CC BY NC SA
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Discrete-Time Goldfishing

Discrete-time goldfishing
Authors: CALOGERO, Francesco;

Discrete-Time Goldfishing

Abstract

The original continuous-time "goldfish" dynamical system is characterized by two neat formulas, the first of which provides the $N$ Newtonian equations of motion of this dynamical system, while the second provides the solution of the corresponding initial-value problem. Several other, more general, solvable dynamical systems "of goldfish type" have been identified over time, featuring, in the right-hand ("forces") side of their Newtonian equations of motion, in addition to other contributions, a velocity-dependent term such as that appearing in the right-hand side of the first formula mentioned above. The solvable character of these models allows detailed analyses of their behavior, which in some cases is quite remarkable (for instance isochronous or asymptotically isochronous). In this paper we introduce and discuss various discrete-time dynamical systems, which are as well solvable, which also display interesting behaviors (including isochrony and asymptotic isochrony) and which reduce to dynamical systems of goldfish type in the limit when the discrete-time independent variable $\ell=0,1,2,...$ becomes the standard continuous-time independent variable $t$, $0\leq t

Country
Italy
Keywords

Completely integrable finite-dimensional Hamiltonian systems, integration methods, integrability tests, Nonlinear Sciences - Exactly Solvable and Integrable Systems, integrable and solvable maps, isochronous discrete-time dynamical systems, FOS: Physical sciences, discrete-time dynamical systems of goldfish type, Dynamical Systems (math.DS), \(n\)-body problems, Completely integrable systems and methods of integration for problems in Hamiltonian and Lagrangian mechanics, near discrete-time dynamical systems, QA1-939, FOS: Mathematics, nonlinear discrete-time dynamical systems, Mathematics - Dynamical Systems, Exactly Solvable and Integrable Systems (nlin.SI), Mathematics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
15
Average
Top 10%
Top 10%
Green
gold