Search arXiv⌕ Search

arXiv · 0705.3283

Actions of symbolic dynamical systems on $C^*$-algebras II. Simplicity of $C^*$-symbolic crossed products and some examples

Abstract

We have introduced a notion of $C^*$-symbolic dynamical system in [K. Matsumoto: Actions of symbolic dynamical systems on $C^*$-algebras, to appear in J. Reine Angew. Math.], that is a finite family of endomorphisms of a $C^*$-algebra with some conditions. The endomorphisms are indexed by symbols and yield both a subshift and a $C^*$-algebra of a Hilbert $C^*$-bimodule. The associated $C^*$-algebra with the $C^*$-symbolic dynamical system is regarded as a crossed product by the subshift. We will study a simplicity condition of the $C^*$-algebras of the $C^*$-symbolic dynamical systems. Some examples such as irrational rotation Cuntz-Krieger algebras will be studied.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Kengo Matsumoto. 2007-05-23. Actions of symbolic dynamical systems on $C^*$-algebras II. Simplicity of $C^*$-symbolic crossed products and some examples. https://arxiv.org/abs/0705.3283

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

Remarks on Derivations on Maximal Triangular Operator Algebras

This note concerns bounded derivations on maximal triangular operator algebras on a Hilbert space. Given any bounded derivation $δ$ on a maximal triangular algebra whose invariant lattice is continuous at 1, an operator which is shown to implement $δ$ is constructed explicitly. For a general reducible maximal triangular algebra the same construction yields an operator which is shown to implement any $δ$, if and only if $δ$ obeys an additional triple product rule. This work is based on unpublished parts of the author's dissertation [19] and describes a variant of the proof of a more general result in [21] and is thus in effect a footnote to that work. To the best of the author's knowledge the constructive proof and triple product rule have not appeared elsewhere. The work here is not set in the context of the large body of subsequent research, and no claims are made regarding its relationship to later developments.

math.OA↗

An Approximate-Diagonal Characterization of Amenable Actions on C*Algebras

We introduce relative $h$-diagonals for crossed products $A\rtimes_αΓ$ by discrete groups, which are positive-form approximate diagonals in the Haagerup tensor product taken relative to $A$. We show that $α$ is amenable if and only if $A\rtimes_αΓ$ admits a relative $h$-diagonal, an analogue of Johnson's theorem for $L^{1}(G)$.

math.OA↗

Failure of noncommutative Rota's theorem with $L\log L$ endpoint

We construct a factorizable Markov map $T$ on a hyperfinite finite von Neumann algebra and a positive element $x\in L\log L$ for which the sequence $T^n(T^*)^n x$ does not converge bilaterally almost uniformly. This answers a question of Anantharaman-Delaroche \cite{AD2006}.

math.OA↗