C∗-ALGEBRAS, GROUPOIDS AND COVERS OF SHIFT SPACES
C∗-ALGEBRAS, GROUPOIDS AND COVERS OF SHIFT SPACES
复制标题
C*-代数、群曲面和移位空间的覆盖
DOI:
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
Kevin Aguyar
中科院分区:
文献类型:
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作者:
Kevin Aguyar
To every one-sided shift space X we associate a cover ̃ X, a groupoid GX and a C∗-algebra OX. We characterize one-sided conjugacy, eventual conjugacy and (stabilizer-preserving) continuous orbit equivalence between X and Y in terms of isomorphism of GX and GY, and diagonal-preserving ∗-isomorphism of OX and OY. We also characterize two-sided conjugacy and flow equivalence of the associated two-sided shift spaces ΛX and ΛY in terms of isomorphism of the stabilized groupoids GX×R and GY×R, and diagonal-preserving ∗-isomorphism of the stabilized C∗-algebras OX⊗K and OY⊗K. Our strategy is to lift relations on the shift spaces to similar relations on the covers. Restricting to the class of sofic shifts whose groupoids are effective, we show that it is possible to recover the continuous orbit equivalence class of X from the pair (OX, C(X)), and the flow equivalence class of ΛX from the pair (OX ⊗ K, C(X) ⊗ c0). In particular, continuous orbit equivalence implies flow equivalence for this class of shift spaces.
DOI:
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发表时间:
2007
期刊:
影响因子:
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作者:
Kengo;Matsumoto
通讯作者:
Matsumoto
DOI:
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发表时间:
2002
期刊:
Doc.Math. 7
影响因子:
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作者:
T.Yokoyama;H.Nakajima;K.Shibasaki;V.F.Melnikov;A.V.Stepanov;K.Matsumoto
通讯作者:
K.Matsumoto