A note on weak amenability for reduced free products of discrete quantum groups

Abstract

We prove that the Cowling-Haagerup constant of a reduced free product of weakly amenable discrete quantum groups with Cowling-Haagerup constant equal to 1 is again equal to 1.

Shorter version with numbering matching the published one. An extended version is available in my PhD thesis

References in corpus (2)

• Approximation properties and absence of Cartan subalgebra for free Araki-Woods factors
• On a class of ${\mathrm{II}}_1$ factors with at most one Cartan subalgebra

Cited by in corpus (1)

• The Haagerup property for locally compact quantum groups