定常AF-代数与序单维群同构问题的可判定性
Decidability of the isomorphism problem for stationary AF-algebras and the associated ordered simple dimension groups
摘要:
本文考虑了稳定AF- C* 代数-代数的同构的概念,即当相应的Bratteli图是稳定的时,与单个正方形本原非奇异关联矩阵相关联。C*-同构在这些矩阵上导出了一个等价关系,称为C*-等价。我们证明了相关的同构等价问题是可判定的,即,存在一种算法,其可以用于在有限数目的步骤中检查两个给定的本原非奇异矩阵是否是C*-等价的。
英文摘要:
The notion of isomorphism of stable AF-C*-algebras is considered in this paper in the case when the corresponding Bratteli diagram is stationary, i.e., is associated with a single square primitive nonsingular incidence matrix. C*-isomorphism induces an equivalence relation on these matrices, called C*-equivalence. We show that the associated isomorphism equivalence problem is decidable, i.e., there is an algorithm that can be used to check in a finite number of steps whether two given primitive nonsingular matrices are C*-equivalent or not.
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