Search Results - "Brix, Kevin Aguyar"
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Splittings for $C^$-correspondences and strong shift equivalence
Published in Mathematica scandinavica (01-01-2024)“…We present an extension of the notion of in-splits from symbolic dynamics to topological graphs and, more generally, to $C^*$-correspondences. We demonstrate…”
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2
Some results regarding the ideal structure of C∗$C^$‐algebras of étale groupoids
Published in Journal of the London Mathematical Society (01-03-2024)“…Abstract We prove a sandwiching lemma for inner‐exact locally compact Hausdorff étale groupoids. Our lemma says that every ideal of the reduced ‐algebra of…”
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CUNTZ–KRIEGER ALGEBRAS AND ONE-SIDED CONJUGACY OF SHIFTS OF FINITE TYPE AND THEIR GROUPOIDS
Published in Journal of the Australian Mathematical Society (2001) (01-12-2020)“…A one-sided shift of finite type $(\mathsf{X}_{A},\unicode[STIX]{x1D70E}_{A})$ determines on the one hand a Cuntz–Krieger algebra ${\mathcal{O}}_{A}$ with a…”
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4
Invertible and noninvertible symbolic dynamics and their C-algebras
Published 21-12-2022“…This paper surveys the recent advances in the interactions between symbolic dynamics and C*-algebras. We explain how conjugacies and orbit equivalences of both…”
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Sturmian subshifts and their C-algebras
Published 22-07-2021“…This paper investigates the structure of C*-algebras built from one-sided Sturmian subshifts. They are parametrised by irrationals in the unit interval and…”
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6
On strong shift equivalence for row-finite graphs and C-algebras
Published 11-12-2022“…Involve 17 (2024) 293-309 This note extends and strengthens a theorem of Bates that says that row-finite graphs that are strong shift equivalent have Morita…”
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Morphisms of Cuntz-Pimsner algebras from completely positive maps
Published 28-11-2023“…We introduce positive correspondences as right C*-modules with left actions given by completely positive maps. Positive correspondences form a semi-category…”
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8
Splittings for C-correspondences and strong shift equivalence
Published 27-11-2023“…We present an extension of the notion of in-splits from symbolic dynamics to topological graphs and, more generally, to C*-correspondences. We demonstrate that…”
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9
Balanced strong shift equivalence, balanced in-splits, and eventual conjugacy
Published 11-12-2019“…We introduce the notion of balanced strong shift equivalence between square nonnegative integer matrices, and show that two finite graphs with no sinks are…”
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10
Unital aligned shift equivalence and the graded classification conjecture for Leavitt path algebras
Published 05-09-2024“…We prove that a unital shift equivalence induces a graded isomorphism of Leavitt path algebras when the shift equivalence satisfies an alignment condition…”
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Minimal covers with continuity-preserving transfer operators for topological dynamical systems
Published 21-08-2024“…Given a non-invertible dynamical system with a transfer operator, we show there is a minimal cover with a transfer operator that preserves continuous…”
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12
Maximal ideals of reduced group C-algebras and Thompson's groups
Published 20-03-2024“…Given a conditional expectation $P$ from a C*-algebra $B$ onto a C*-subalgebra $A$, we observe that induction of ideals via $P$, together with a map which we…”
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13
Normal coactions extend to the C-envelope
Published 09-09-2023“…We show that a normal coaction of a discrete group on an operator algebra extends to a normal coaction on the C*-envelope. This resolves an open problem…”
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14
Ideal structure of C-algebras of commuting local homeomorphisms
Published 03-03-2023“…We determine the primitive ideal space and hence the ideal lattice of a large class of separable groupoid C*-algebras that includes all 2-graph C*-algebras. A…”
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15
mathrm{C^}-algebras, groupoids and covers of shift spaces
Published in Transactions of the American Mathematical Society. Series B (30-10-2020)“…To every one-sided shift space \mathsf {X} we associate a cover \widetilde {\mathsf {X}}, a groupoid \mathcal {G}_\mathsf {X} and a \mathrm {C^*}-algebra…”
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16
Some results regarding the ideal structure of C-algebras of \'etale groupoids
Published 03-01-2024“…We prove a sandwiching lemma for inner-exact locally compact Hausdorff \'etale groupoids. Our lemma says that every ideal of the reduced $C^*$-algebra of such…”
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17
C^$-simplicity and representations of topological full groups of groupoids
Published 17-05-2018“…Journal of Functional Analysis Volume 277, Issue 9, 1 November 2019, Pages 2981-2996 Given an ample groupoid $G$ with compact unit space, we study the…”
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18
Conjugacy of local homeomorphisms via groupoids and C-algebras
Published 09-08-2022“…Ergodic Theory Dynam. Systems 43 (2023), 2516--2537 We investigate dynamical systems consisting of a locally compact Hausdorff space equipped with a partially…”
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C-algebras, groupoids and covers of shift spaces
Published 22-11-2020“…Trans. Amer. Math. Soc. Ser. B 7 (2020), 134-185 To every one-sided shift space $\mathsf{X}$ we associate a cover $\tilde{\mathsf{X}}$, a groupoid…”
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20
Cuntz-Krieger algebras and one-sided conjugacy of shifts of finite type and their groupoids
Published 19-02-2019“…J. Aust. Math. Soc. 109 (2020), no. 3, 289-298 A one-sided shift of finite type $(X_A,\sigma_A)$ determines on the one hand a Cuntz-Krieger algebra…”
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