U. Pennig

activity

20052026

most citedA Dixmier-Douady theory for strongly self-absorbing C*-algebras

33 citations · 143 across the 27 of their papers we have counts for

collaborators

Showing 2015 · math.OAShow all

2 papers · 2 filters

math.OA2015★ 8 cited

Deformations of nilpotent groups and homotopy symmetric $C^{*}$ -algebras

Marius Dadarlat, Ulrich Pennig

The homotopy symmetric $C^{*}$ -algebras are those separable $C^{*}$ -algebras for which one can unsuspend in E-theory. We find a new simple condition that characterizes homotopy symmetr…

math.OA2015

Crossed module actions on continuous trace $C^{*}$ -algebras

Ralf Meyer, Ulrich Pennig

We lift an action of a torus $T^{n}$ on the spectrum of a continuous trace algebra to an action of a certain crossed module of Lie groups that is an extension of $\mathbb{R}…

Deformations of nilpotent groups and homotopy symmetric C∗-algebras

Crossed module actions on continuous trace C∗-algebras

Deformations of nilpotent groups and homotopy symmetric $C^{*}$ -algebras

Crossed module actions on continuous trace $C^{*}$ -algebras