Impact of (a)Synchronism on ECA: Towards a New Classification
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| Format: | Preprint |
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2025
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| _version_ | 1866916739252486144 |
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| author | Donoso-Leiva, Isabel Goles, Eric Rios-Wilson, Martin Sene, Sylvain |
| author_facet | Donoso-Leiva, Isabel Goles, Eric Rios-Wilson, Martin Sene, Sylvain |
| contents | In this paper, we study the effect of (a)synchronism on the dynamics of elementary cellular automata. Within the framework of our study, we choose five distinct update schemes, selected from the family of periodic update modes: parallel, sequential, block-sequential, block-parallel, and local clocks. Our main measure of complexity is the maximum period of the limit cycles in the dynamics of each rule. In this context, we present a classification of the ECA rule landscape. We classified most elementary rules into three distinct regimes: constant, linear, and superpolynomial. Surprisingly, while some rules exhibit more complex behavior under a broader class of update schemes, others show similar behavior across all the considered update schemes. Although we are able to derive upper and lower bounds for the maximum period of the limit cycles in most cases, the analysis of some rules remains open. To complement the study of the 88 elementary rules, we introduce a numerical simulation framework based on two main measurements: the energy and density of the configurations. In this context, we observe that some rules exhibit significant variability depending on the update scheme, while others remain stable, confirming what was observed as a result of the classification obtained in the theoretical analysis. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_10645 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Impact of (a)Synchronism on ECA: Towards a New Classification Donoso-Leiva, Isabel Goles, Eric Rios-Wilson, Martin Sene, Sylvain Discrete Mathematics Dynamical Systems Cellular Automata and Lattice Gases 68 (Primary) G.2.0 In this paper, we study the effect of (a)synchronism on the dynamics of elementary cellular automata. Within the framework of our study, we choose five distinct update schemes, selected from the family of periodic update modes: parallel, sequential, block-sequential, block-parallel, and local clocks. Our main measure of complexity is the maximum period of the limit cycles in the dynamics of each rule. In this context, we present a classification of the ECA rule landscape. We classified most elementary rules into three distinct regimes: constant, linear, and superpolynomial. Surprisingly, while some rules exhibit more complex behavior under a broader class of update schemes, others show similar behavior across all the considered update schemes. Although we are able to derive upper and lower bounds for the maximum period of the limit cycles in most cases, the analysis of some rules remains open. To complement the study of the 88 elementary rules, we introduce a numerical simulation framework based on two main measurements: the energy and density of the configurations. In this context, we observe that some rules exhibit significant variability depending on the update scheme, while others remain stable, confirming what was observed as a result of the classification obtained in the theoretical analysis. |
| title | Impact of (a)Synchronism on ECA: Towards a New Classification |
| topic | Discrete Mathematics Dynamical Systems Cellular Automata and Lattice Gases 68 (Primary) G.2.0 |
| url | https://arxiv.org/abs/2505.10645 |