Maximal C⁎-covers and residual finite-dimensionality

I Thompson - Journal of Mathematical Analysis and Applications, 2022 - Elsevier
We study residually finite-dimensional (or RFD) operator algebras which may not be self-
adjoint. An operator algebra may be RFD while simultaneously possessing completely …

Finite-dimensional approximations and semigroup coactions for operator algebras

R Clouâtre, A Dor-On - International Mathematics Research …, 2024 - academic.oup.com
The residual finite-dimensionality of a-algebra is known to be encoded in a topological
property of its space of representations, stating that finite-dimensional representations …

Universal -algebras with the local lifting property

KE Courtney - MATHEMATICA SCANDINAVICA, 2021 - mscand.dk
Abstract The Local Lifting Property (LLP) is a localized version of projectivity for completely
positive maps between $\mathrm {C}^* $-algebras. Outside of the nuclear case, very few …

On the (Local) Lifting Property

D Enders, T Shulman - arXiv preprint arXiv:2403.12224, 2024 - arxiv.org
The (Local) Lifting Property ((L) LP) is introduced by Kirchberg and deals with lifting
completely positive maps. We give a characterization of the (L) LP in terms of lifting $\ast …

[HTML][HTML] Central amalgamation of groups and the RFD property

T Shulman - Advances in Mathematics, 2022 - Elsevier
It is an old and challenging topic to investigate for which discrete groups G the full group C*-
algebra C⁎(G) is residually finite-dimensional (RFD). In particular not much is known about …

Tutorial on Rational Rotation --Algebras

WM Lawton - arXiv preprint arXiv:2111.02932, 2021 - arxiv.org
The rotation algebra $\mathcal A_ {\theta} $ is the universal $ C^* $--algebra generated by
unitary operators $ U, V $ satisfying the commutation relation $ UV=\omega VU $ where …

[PDF][PDF] Residually Finite Stuffs

A Prasad - 2023 - kristincourtney.com
We pick-up from where we left off in talk 3 about exact C*-algebras. We learnt what an exact
C*-algebra is and how exact sequences of C*-algebras work. In the first section of this talk …

Universal -algebras with the Local Lifting Property

KE Courtney - arXiv preprint arXiv:2002.02365, 2020 - arxiv.org
The Local Lifting Property (LLP) is a localized version of projectivity for completely positive
maps between $\mathrm {C}^* $-algebras. Outside of the nuclear case, very few $\mathrm …