The modern theory of Cuntz semigroups of C*-algebras

E Gardella, F Perera - arXiv preprint arXiv:2212.02290, 2022 - arxiv.org
We give a detailed introduction to the theory of Cuntz semigroups for C*-algebras.
Beginning with the most basic definitions and technical lemmas, we present several results …

[图书][B] Tensor products and regularity properties of Cuntz semigroups

R Antoine, F Perera, H Thiel - 2018 - ams.org
The Cuntz semigroup of a $ C^* $-algebra is an important invariant in the structure and
classification theory of $ C^* $-algebras. It captures more information than $ K $-theory but is …

[HTML][HTML] Classification of inductive limits of 1-dimensional NCCW complexes

L Robert - Advances in Mathematics, 2012 - Elsevier
A classification result is obtained for the C∗-algebras that are (stably isomorphic to)
inductive limits of 1-dimensional noncommutative CW complexes with trivial K1-group. The …

C*-algebras of stable rank one and their Cuntz semigroups

R Antoine, F Perera, L Robert… - Duke Mathematical Journal, 2022 - projecteuclid.org
The uncovering of new structure on the Cuntz semigroup of a C*-algebra of stable rank one
leads to several applications: we answer affirmatively, for the class of stable rank-one C …

The Corona Factorization property, Stability, and the Cuntz semigroup of a C*-algebra

E Ortega, F Perera, M Rørdam - … Mathematics Research Notices, 2012 - ieeexplore.ieee.org
The Corona Factorization Property, originally invented to study extensions of C*-algebras,
conveys essential information about the intrinsic structure of the C*-algebra. We show that …

The Cuntz semigroup of a ring

R Antoine, P Ara, J Bosa, F Perera, E Vilalta - Selecta Mathematica, 2025 - Springer
For any ring R, we introduce an invariant in the form of a partially ordered abelian
semigroup\({\mathrm S}(R)\) built from an equivalence relation on the class of countably …

Abstract bivariant Cuntz semigroups

R Antoine, F Perera, H Thiel - … Mathematics Research Notices, 2020 - academic.oup.com
We show that abstract Cuntz semigroups form a closed symmetric monoidal category. Thus,
given Cuntz semigroups and, there is another Cuntz semigroup playing the role of …

Nuclear dimension and 𝒵-stability of non-simple 𝒞*-algebras

L Robert, A Tikuisis - Transactions of the American Mathematical Society, 2017 - ams.org
We investigate the interplay of the following regularity properties for non-simple $\mathrm
C^* $-algebras: finite nuclear dimension, $\mathcal Z $-stability, and algebraic regularity in …

The descriptive set theory of C*-algebra invariants

I Farah, A Toms, A Törnquist - … Mathematics Research Notices, 2013 - ieeexplore.ieee.org
We establish the Borel computability of various C*-algebra invariants, including the Elliott
invariant and the Cuntz semigroup. As applications, we deduce that AF algebras are …

C*-algebras of stable rank one and their Cuntz semigroups

R Antoine, F Perera, L Robert, H Thiel - arXiv preprint arXiv:1809.03984, 2018 - arxiv.org
The uncovering of new structure on the Cuntz semigroup of a C*-algebra of stable rank one
leads to several applications: We answer affirmatively, for the class of stable rank one C …