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math.QA2025
Schoenberg correspondence for multifaced independence
Malte Gerhold
We extend the Schoenberg correspondence for universal independences by Schürmann \& Voà to the multivariate setting of Manzel \& Schürmann, covering, e.g., Voiculescu's bifreene…
math.QA2024
Free resolutions for free unitary quantum groups and universal cosovereign Hopf algebras
Isabelle Baraquin, Uwe Franz, Malte Gerhold +2
We find a finite free resolution of the counit of the free unitary quantum groups of van Daele and Wang and, more generally, Bichon's universal cosovereign Hopf algebras with a gen…