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math.OA2020★ 9 cited
Gysin sequences and SU(2)-symmetries of C*-algebras
Francesca Arici, Jens Kaad
Motivated by the study of symmetries of C*-algebras, as well as by multivariate operator theory, we introduce the notion of an SU(2)-equivariant subproduct system of Hilbert spaces…
math.OA2020
Gromov-Hausdorff convergence of quantised intervals
Thomas Gotfredsen, Jens Kaad, David Kyed
The Podles quantum sphere S^2_q admits a natural commutative C*-subalgebra I_q with spectrum {0} \cup {q^{2k}: k = 0,1,2,...}, which may therefore be considered as a quantised vers…