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arXiv 1503.08000math.DSmath.GR
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图的塔、层及其不变测度

Graph towers, laminations and their invariant measures

Nicolas Bédaride, Arnaud Hilion, Martin Lustig

摘要:

在本文中,我们提出了一个组合机器,由一个图塔$\overleftarrow Γ$和$\overleftarrow Γ$上的矢量塔$\overleftarrow v$,它使我们能够有效地描述所有的不变测度$μ= μ^{\overleftarrow v}$在任何给定的移位空间在有限的字母表。新技术承认一些直接的应用,特别是关于不变测度的非原始替代subshifts,最小subshifts与许多遍历措施,或一个有效的计算的措施,一个给定的圆柱。它也适用于电流上的自由群$F_N$,特别是一组投影固定的电流下的(可能可约)自同态$φ: F_N \to F_N$的行动是确定的,当$φ$是由一个训练轨道地图。

英文摘要:

In this paper we present a combinatorial machinery, consisting of a graph tower $\overleftarrow Γ$ and vector towers $\overleftarrow v$ on $\overleftarrow Γ$, which allows us to efficiently describe all invariant measures $μ= μ^{\overleftarrow v}$ on any given shift space over a finite alphabet. The new technology admits a number of direct applications, in particular concerning invariant measures on non-primitive substitution subshifts, minimal subshifts with many ergodic measures, or an efficient calculation of the measure of a given cylinder. It also applies to currents on a free group $F_N$, and in particular the set of projectively fixed currents under the action of a (possibly reducible) endomorphism $φ: F_N \to F_N$ is determined, when $φ$ is represented by a train track map.

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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