[HTML][HTML] The approximation property for locally compact quantum groups

M Daws, J Krajczok, C Voigt - Advances in Mathematics, 2024 - Elsevier
Abstract We study the Haagerup–Kraus approximation property for locally compact quantum
groups, generalising and unifying previous work by Kraus–Ruan and Crann. Along the way …

Approximation properties for locally compact quantum groups

M Brannan - arXiv preprint arXiv:1605.01770, 2016 - arxiv.org
This is a survey of some aspects of the subject of approximation properties for locally
compact quantum groups, based on lectures given at the {\it Topological Quantum Groups} …

[HTML][HTML] Orthogonal free quantum group factors are strongly 1-bounded

M Brannan, R Vergnioux - Advances in Mathematics, 2018 - Elsevier
We prove that the orthogonal free quantum group factors L (FON) are strongly 1-bounded in
the sense of Jung. In particular, they are not isomorphic to free group factors. This result is …

Around property (T) for quantum groups

M Daws, A Skalski, A Viselter - Communications in Mathematical Physics, 2017 - Springer
We study Property (T) for locally compact quantum groups, providing several new
characterisations, especially related to operator algebraic ergodic theory. Quantum Property …

On the von Neumann algebra of class functions on a compact quantum group

J Krajczok, M Wasilewski - Journal of Functional Analysis, 2022 - Elsevier
We study analogues of the radial subalgebras in free group factors (called the algebras of
class functions) in the setting of compact quantum groups. For the free orthogonal quantum …

[HTML][HTML] Property (T) discrete quantum groups and subfactors with triangle presentations

S Vaes, M Valvekens - Advances in Mathematics, 2019 - Elsevier
Kazhdan's property (T) has been studied for several discrete group-like structures, including
standard invariants of Jones' subfactors and discrete quantum groups. We prove a Żuk-type …

Actions, quotients and lattices of locally compact quantum groups

M Brannan, A Chirvasitu, A Viselter - Documenta Mathematica, 2020 - ems.press
We prove a number of property (T) permanence results for locally compact quantum groups
under exact sequences and the presence of invariant states, analogous to their classical …

[PDF][PDF] Modular properties of locally compact quantum groups

J Krajczok - 2022 - impan.pl
Niech G b¦ dzie lokalnie zwart¡ 1 grup¡ abelow¡. Wraz z G mo» emy zwi¡ za¢ CG, zbiór
(mocno ci¡ gªych) reprezentacji nieprzywiedlnych. Wszystkie reprezentacje nieprzywiedlne …

Examples of compact quantum groups with L∞(G) a factor

J Krajczok, PM Sołtan - Journal of Functional Analysis, 2024 - Elsevier
Abstract For each λ∈] 0, 1] we exhibit an uncountable family of compact quantum groups G
such that the von Neumann algebra L∞(G) is the injective factor of type III λ with separable …

Automorphisms of compact quantum groups

K Mukherjee, I Patri - Proceedings of the London Mathematical …, 2018 - Wiley Online Library
This paper initiates the study of non‐commutative dynamical systems of the form (G, Γ),
where a discrete group Γ acts on a compact quantum group (CQG) G by quantum …