activity
20052025
most citedCompletely positive maps of order zero

132 citations · 222 across the 18 of their papers we have counts for

collaborators
Showing math.OAShow all

22 papers · 1 filter

math.OA2024

The dynamical Cuntz semigroup and ideal-free quotients of Cuntz semigroups

Joan Bosa, Francesc Perera, Jianchao Wu +1

We develop a theory of general quotients for W- and Cu-semigroups beyond the case of quotients by ideals. To this end, we introduce the notion of a normal pair, which allows us to…

math.OA2020★ 7 cited

The Cuntz-Toeplitz algebras have nuclear dimension one

Philip Easo, Esperanza Garijo, Sarunas Kaubrys +12

We prove that unital extensions of Kirchberg algebras by separable stable AF algebras have nuclear dimension one. The title follows.

math.OA2019★ 2 cited

Classification of tiling -algebras

Luke J. Ito, Michael F. Whittaker, Joachim Zacharias

We prove that Kellendonk's -algebra of an aperiodic and repetitive tiling with finite local complexity is classifiable by the Elliott invariant. Our result follows from showin…

math.OA2016

The Fubini product and its applications

Otgonbayar Uuye, Joachim Zacharias

The Fubini product of operator spaces provide a powerful tool for analysing properties of tensor products. In this paper we review the the theory of Fubini products and apply it to…

math.OA2016

A Bivariant Theory for the Cuntz Semigroup

Joan Bosa, Gabriele Tornetta, Joachim Zacharias

We introduce a bivariant version of the Cuntz semigroup as equivalence classes of order zero maps generalizing the ordinary Cuntz semigroup. The theory has many properties formally…

math.OA2015

Spectral Metric Spaces on Extensions of C*-Algebras

Andrew Hawkins, Joachim Zacharias

We construct spectral triples on C*-algebraic extensions of unital C*-algebras by stable ideals satisfying a certain Toeplitz type property using given spectral triples on the quot…