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Visible and hidden observables in super-linearization - MaRDI portal

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Visible and hidden observables in super-linearization

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Publication:6416216

arXiv2211.02739MaRDI QIDQ6416216

Author name not available (Why is that?)

Publication date: 4 November 2022

Abstract: We call a system super-linearizable if it admits finite-dimensional embedding as a linear system -- known as a finite-dimensional Koopman embedding; said otherwise, if its dynamics can be linearized by adding a finite set of observables. We introduce the notions of visible and hidden observables for such embeddings which, roughly speaking, are the observables that explicitly appear in the original system and the ones that do not, but yet are necessary for its embedding. Distinct embeddings can have different numbers of hidden and visible observables. In this paper, we derive a tight lower bound for the number of visible observables of a system among all its super-linearizations.












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