Subshifts of multi-dimensional shifts of finite type

Subshifts of multi-dimensional shifts of finite type
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DOI:
10.1017/s0143385700000468
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发表时间:
2000-06
影响因子:
0.9
通讯作者:
A. Quas;Paul Trow
A. Quas;Paul Trow
中科院分区:
数学2区
文献类型:
--
作者:
A. Quas;Paul Trow

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我们证明,具有正熵的有限类型 $X$ 的每个移位都有有限类型的适当子移位,其中熵严格小于 $X$ 的熵,但熵任意接近 $X$ 的熵。因此,$X$ 包含有限类型子移位的无限链,其熵严格递减。
We show that every shift of finite type $X$ with positive entropy has proper subshifts of finite type with entropy strictly smaller than the entropy of $X$, but with entropy arbitrarily close to the entropy of $X$. Consequently, $X$ contains an infinite chain of subshifts of finite type which is strictly decreasing in entropy.