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arXiv 1206.0585math.DScs.FL
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满移位上幂等元胞自动机的一个刻画

A Characterization of Cellular Automata Generated by Idempotents on the Full Shift

Ville Salo

摘要:

在这篇文章中,我们讨论了由所谓的幂等元胞自动机(CA G,使得G^2 = G)在全移位上生成的元胞自动机族。我们证明了幂等元CA的产品的一个特征,并显示CA的例子是不容易直接分解成一个产品的幂等元,但这是平凡的,以满足条件的特征。我们的证明使用的思想类似于著名的嵌入定理和低熵因子定理在符号动力学。我们还考虑了幂等元胞自动机产品类的一些自然可判定性问题。

英文摘要:

In this article, we discuss the family of cellular automata generated by so-called idempotent cellular automata (CA G such that G^2 = G) on the full shift. We prove a characterization of products of idempotent CA, and show examples of CA which are not easy to directly decompose into a product of idempotents, but which are trivially seen to satisfy the conditions of the characterization. Our proof uses ideas similar to those used in the well-known Embedding Theorem and Lower Entropy Factor Theorem in symbolic dynamics. We also consider some natural decidability questions for the class of products of idempotent CA.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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