81 citations · 108 across the 4 of their papers we have counts for
4 papers
Equivariant Join and Fusion of Noncommutative Algebras
Ludwik Dabrowski, Tom Hadfield, Piotr M. Hajac
We translate the concept of the join of topological spaces to the language of -algebras, replace the -algebra of functions on the interval with evaluation maps at…
Index pairings for pullbacks of C*-algebras
L. Dabrowski, T. Hadfield, P. M. Hajac +2
In this overview, we study how to reduce the index pairing for a fibre-product C*-algebra to the index pairing for the C*-algebra over which the fibre product is taken. As an examp…
Graph C*-algebras and Z/2Z-quotients of quantum spheres
P. M. Hajac, R. Matthes, W. Szymanski
We consider two Z/2Z-actions on the Podles generic quantum spheres. They yield, as noncommutative quotient spaces, the Klimek-Lesniewski q-disc and the quantum real projective spac…
Strong Connections and Chern-Connes Pairing in the Hopf-Galois Theory
L. Dabrowski, H. Grosse, P. M. Hajac
We reformulate the concept of connection on a Hopf-Galois extension in order to apply it in computing the Chern-Connes pairing between the cyclic cohomology $HC^{2n}…