8 papers · 1 filter
Generic classification of the quasi-free flows on the Cuntz algebra
Robert Neagu
In this article we show that the quasi-free flows on the Cuntz algebra are generically classifiable by the inverse temperature of their unique KMS state. Along the…
Brown-Voiculescu entropy revisited
Bhishan Jacelon, Robert Neagu
Aided by the tools and outlook provided by modern classification theory, we take a new look at the Brown-Voiculescu entropy of endomorphisms of nuclear C*-algebras. In particular,…
On a Rokhlin property for abelian group actions on C-algebras
Johannes Christensen, Robert Neagu, Gábor Szabó
In this article, we study the so-called abelian Rokhlin property for actions of locally compact, abelian groups on C-algebras. We propose a unifying framework for obtaining var…
The stable uniqueness theorem for unitary tensor category equivariant KK-theory
Sergio Girón Pacheco, Kan Kitamura, Robert Neagu
We introduce the Cuntz-Thomsen picture of -equivariant Kasparov theory, denoted , for a unitary tensor category with countably m…
The admissible KMS bundles on classifiable C-algebras
Robert Neagu
Given any unital, finite, classifiable C-algebra with real rank zero and any compact simplex bundle with the fibre at zero being homeomorphic to the space of tracial states…
Inclusions of real rank zero
James Gabe, Robert Neagu
We introduce a notion of real rank zero for inclusions of C-algebras. After showing that our definition has many equivalent characterisations, we offer a complete description o…
An Elliott intertwining approach to classifying actions of C-tensor categories
Sergio Girón Pacheco, Robert Neagu
We introduce a categorical approach to classifying actions of C-tensor categories on C-algebras up to cocycle conjugacy. We show that, in this category, induc…
On topologically zero-dimensional morphisms
Jorge Castillejos, Robert Neagu
We investigate -homomorphisms with nuclear dimension equal to zero. In the framework of classification of -homo-morphisms, we characterise such maps as those that can be ap…