On universal property of reciprocal Kirchberg algebras and uniquely ergodic automorphisms

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Hauptverfasser: Matsumoto, Kengo, Sogabe, Taro
Format: Preprint
Veröffentlicht: 2025
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author Matsumoto, Kengo
Sogabe, Taro
author_facet Matsumoto, Kengo
Sogabe, Taro
contents Reciprocality in Kirchberg algebras with finitely generated K-groups is regarded as a K-theoretic duality through K-groups and strong extension groups. We will prove that the reciprocal Kirchberg algebra has a universal property with respect to some generating C*-subalgebra and a family of generating partial isometries. By using the universal property, we will prove that there exists an aperiodic ergodic automorphism on an arbitrary unital Kirchberg algebra with finitely generated K-groups, which has a unique invariant state. The state is pure.
format Preprint
id arxiv_https___arxiv_org_abs_2511_06760
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On universal property of reciprocal Kirchberg algebras and uniquely ergodic automorphisms
Matsumoto, Kengo
Sogabe, Taro
Operator Algebras
Reciprocality in Kirchberg algebras with finitely generated K-groups is regarded as a K-theoretic duality through K-groups and strong extension groups. We will prove that the reciprocal Kirchberg algebra has a universal property with respect to some generating C*-subalgebra and a family of generating partial isometries. By using the universal property, we will prove that there exists an aperiodic ergodic automorphism on an arbitrary unital Kirchberg algebra with finitely generated K-groups, which has a unique invariant state. The state is pure.
title On universal property of reciprocal Kirchberg algebras and uniquely ergodic automorphisms
topic Operator Algebras
url https://arxiv.org/abs/2511.06760