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arXiv 1803.03082math.DS
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关于自由半群上有限型子移位的拓扑熵

On the topological entropy of subshifts of finite type on free semigroups

Jung-Chao Ban, Chih-Hung Chang

摘要:

本文给出了一种计算有限型$G$ -子移位($G$-SFTs)的拓扑熵的有效方法,它分别用具有$d$生成元的自由群和自由半群$G=F_{d}$和$S_{d}$.我们通过分析相应的非线性递归方程组(SNRE)的熵公式。引入了四种$S_{2}$ -SFT的SNRE类型,即$\mathbf{E},\mathbf{D},\mathbf{C}$和$\mathbf{O}$,并给出了它们的熵的显式计算.这使我们能够在两个符号上给出$S_{2}$ -SFT的完整表征。也就是说,两个符号上的$S_{2}$的熵的集合等于$\mathbf{E}\cup \mathbf{D}\cup \mathbf{C}\cup \mathbf{O}$。在$S_{d}$ -SFTs中开发的方法也将应用于$F_{d}$ -SFTs的熵理论的研究。本文还给出了$S_{d}$ -、$F_{d}$ -黄金平均移动和$k$ -彩色棋盘的熵公式.

英文摘要:

In this paper, we provide an effective method to compute the topological entropies of $G$-subshifts of finite type ($G$-SFTs) with $G=F_{d}$ and $S_{d}$, the free group and free semigroup with $d$ generators respectively. We develop the entropy formula by analyzing the corresponding systems of nonlinear recursive equations (SNREs). Four types of SNREs of $S_{2}$-SFTs, namely the types $\mathbf{E},\mathbf{D},\mathbf{C}$ and $\mathbf{O}$, are introduced and we could compute their entropies explicitly. This enables us to give the complete characterization of $S_{2}$-SFTs on two symbols. That is, the set of entropies of $S_{2}$-SFTs on two symbols is equal to $\mathbf{E}\cup \mathbf{D}\cup \mathbf{C}\cup \mathbf{O}$. The methods developed in $S_{d}$-SFTs will also be applied to the study of the entropy theory of $F_{d}$-SFTs. The entropy formulae of $S_{d}$-, $F_{d}$-golden mean shifts and $k$-colored chessboards are also presented herein.

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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