Journal
INTERNATIONAL MATHEMATICS RESEARCH NOTICES
Volume 2022, Issue 21, Pages 17112-17186Publisher
OXFORD UNIV PRESS
DOI: 10.1093/imrn/rnab204
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Funding
- Israel Science Foundation [1175/18]
- National Science Foundation [1800544, 1502643]
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [1800544] Funding Source: National Science Foundation
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In this study, we introduce the stabilization of the automorphism group for a mixing shift of finite type and investigate its algebraic properties. We are able to distinguish many of the stabilized automorphism groups using these properties. Additionally, for a full shift, we show that the subgroup generated by elements of finite order in the stabilized automorphism group is simple.
For a mixing shift of finite type, the associated automorphism group has a rich algebraic structure, and yet we have few criteria to distinguish when two such groups are isomorphic. We introduce a stabilization of the automorphism group, study its algebraic properties, and use them to distinguish many of the stabilized automorphism groups. We also show that for a full shift, the subgroup of the stabilized automorphism group generated by elements of finite order is simple and that the stabilized automorphism group is an extension of a free abelian group of finite rank by this simple group.
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