activity
20122023
most citedDecomposable approximations revisited

6 citations · 11 across the 6 of their papers we have counts for

collaborators

8 papers

math.OA2023

An asymptotic homotopy lifting property

José R. Carrión, Christopher Schafhauser

A -algebra is said to have the homotopy lifting property if for all -algebras and , for every surjective -homomorphism and for ev…

math.OA2023

Tracially Complete C*-Algebras

José R. Carrión, Jorge Castillejos, Samuel Evington +4

We introduce a new class of operator algebras -- tracially complete C*-algebras -- as a vehicle for transferring ideas and results between C*-algebras and their tracial von Neumann…

math.OA2023★ 4 cited

Classifying -homomorphisms I: Unital simple nuclear -algebras

José R. Carrión, James Gabe, Christopher Schafhauser +2

We classify the unital embeddings of a unital separable nuclear -algebra satisfying the universal coefficient theorem into a unital simple separable nuclear -algebra that…

math.OA2023

A topology on E-theory

José R. Carrión, Christopher Schafhauser

For separable -algebras and , we define a topology on the set consisting of homotopy classes of asymptotic morphisms from to . This gives an enrichmen…

math.OA2019★ 1 cited

Decomposing nuclear maps

José R. Carrión, Christopher Schafhauser

We show that the strengthened version of the completely positive approximation property of Brown, Carrión, and White---where the downward maps are asymptotically order zero and the…

math.OA2016★ 6 cited

Decomposable approximations revisited

Nathanial P. Brown, José R. Carrión, Stuart White

Nuclear C*-algebras enjoy a number of approximation properties, most famously the completely positive approximation property. This was recently sharpened to arrange for the incomin…

math.OA2015

Almost flat K-theory of classifying spaces

José R. Carrión, Marius Dadarlat

We give a rigorous account and prove continuity properties for the correspondence between almost flat bundles on a triangularizable compact connected space and the quasi-representa…

math.OA2012

On groups with quasidiagonal C*-algebras

José Carrión, Marius Dadarlat, Caleb Eckhardt

We examine the question of quasidiagonality for C*-algebras of discrete amenable groups from a variety of angles. We give a quantitative version of Rosenberg's theorem via paradoxi…