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20052023
most citedAmple groupoids: equivalence, homology, and Matui's HK conjecture

25 citations · 122 across the 32 of their papers we have counts for

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18 papers · 1 filter

math.OA2023

Isometry groups of inductive limits of metric spectral triples and Gromov-Hausdorff convergence

Jacopo Bassi, Roberto Conti, Carla Farsi +1

In this paper we study the groups of isometries and the set of bi-Lipschitz automorphisms of spectral triples from a metric viewpoint, in the propinquity framework of Latremoliere.…

math.OA2022

Convergence of inductive sequences of spectral triples for the spectral propinquity

Carla Farsi, Frederic Latremoliere, Judith Packer

In the context of metric geometry, we introduce a new necessary and sufficient condition for the convergence of an inductive sequence of quantum compact metric spaces for the Gromo…

math.OA2022★ 2 cited

Spectral Triples for Noncommutative Solenoids and a Wiener's lemma

Carla Farsi, Therese Basa Landry, Nadia S. Larsen +1

In this paper we construct odd finitely summable spectral triples based on length functions of bounded doubling on noncommutative solenoids. Our spectral triples induce a Leibniz L…

math.OA2021

Irreducibility and monicity for representations of -graph -algebras

Carla Farsi, Elizabeth Gillaspy, Daniel Gonçalves

The representations of a -graph -algebra which arise from -semibranching function systems are closely linked to the dynamics of the -graph . In this paper…

math.OA2020

Cocycles on Certain Groupoids Associated to -Actions

Carla Farsi, Leonard Huang, Alex Kumjian +1

We consider groupoids constructed from a finite number of commuting local homeomorphisms acting on a compact metric space, and study generalized Ruelle operators and -a…

math.OA2018★ 25 cited

Ample groupoids: equivalence, homology, and Matui's HK conjecture

Carla Farsi, Alex Kumjian, David Pask +1

We investigate the homology of ample Hausdorff groupoids. We establish that a number of notions of equivalence of groupoids appearing in the literature coincide for ample Hausdorff…

math.OA2018★ 4 cited

Generalized gauge actions on -graph -algebras: KMS states and Hausdorff structure

Carla Farsi, Elizabeth Gillaspy, Nadia S. Larsen +1

For a finite, strongly connected -graph , an Huef, Laca, Raeburn and Sims studied the KMS states associated to the preferred dynamics of the -graph -algebra .…

math.OA2018★ 3 cited

Purely atomic representations of higher-rank graph C*-algebras

Carla Farsi, Elizabeth Gillaspy, Palle Jorgensen +2

We study purely atomic representations of C*-algebras associated to row-finite and source-free higher-rank graphs. We describe when purely atomic representations are unitarily equi…

math.OA2018

Spectral triples for higher-rank graph -algebras

Carla Farsi, Elizabeth Gillaspy, Antoine Julien +2

In this note, we present a new way to associate a spectral triple to the noncommutative -algebra of a strongly connected finite higher-rank graph . We generalize a…

math.OA2018★ 6 cited

Monic representations of finite higher-rank graphs

Carla Farsi, Elizabeth Gillaspy, Palle Jorgensen +2

In this paper we define the notion of monic representation for the -algebras of finite higher-rank graphs with no sources, and undertake a comprehensive study of them. Monic r…

math.OA2018

Representations of higher-rank graph -algebras associated to -semibranching function systems

Carla Farsi, Elizabeth Gillaspy, Palle E. T. Jorgensen +2

In this paper, we discuss a method of constructing separable representations of the -algebras associated to strongly connected row-finite -graphs . We begin by giving an…

math.OA2018

Spectral triples and wavelets for higher-rank graphs

Carla Farsi, Elizabeth Gillaspy, Antoine Julien +2

In this paper, we present a new way to associate a finitely summable spectral triple to a higher-rank graph , via the infinite path space of . Moreover, we prove t…

math.OA2017★ 2 cited

Separable representations of higher-rank graphs

Carla Farsi, Elizabeth Gillaspy, Palle Jorgensen +2

In this monograph we undertake a comprehensive study of separable representations (as well as their unitary equivalence classes) of -algebras associated to strongly connected…

math.OA2017★ 5 cited

Wavelets and spectral triples for higher-rank graphs

Carla Farsi, Elizabeth Gillaspy, Antoine Julien +2

In this paper, we present two new ways to associate a spectral triple to a higher-rank graph . Moreover, we prove that these spectral triples are intimately connected to the wav…

math.OA2016

Wavelets and spectral triples for fractal representations of Cuntz algebras

Carla Farsi, Elizabeth Gillaspy, Antoine Julien +2

In this article we provide an identification between the wavelet decompositions of certain fractal representations of algebras of directed graphs of M. Marcolli and A. Paoluc…

math.OA2016

Wavelets and graph -algebras

Carla Farsi, Elizabeth Gillaspy, Sooran Kang +1

Here we give an overview on the connection between wavelet theory and representation theory for graph -algebras, including the higher-rank graph -algebras of A. Kumj…

math.OA2015

Separable representations, KMS states, and wavelets for higher-rank graphs

Carla Farsi, Elizabeth Gillaspy, Sooran Kang +1

Let be a strongly connected, finite higher-rank graph. In this paper, we construct representations of on certain separable Hilbert spaces of the form , by in…

math.OA2015

Twists over étale groupoids and twisted vector bundles

Carla Farsi, Elizabeth Gillaspy

Inspired by recent papers on twisted -theory, we consider in this article the question of when a twist over a locally compact Hausdorff groupoid (wit…