18 citations · 42 across the 19 of their papers we have counts for
4 papers · 1 filter
Pullbacks of graph C*-algebras from admissible pushouts of graphs
Piotr M. Hajac, Sarah Reznikoff, Mariusz Tobolski
We define an admissible decomposition of a graph into subgraphs and , and consider the intersection graph as a subgraph of both and . We pro…
Associated noncommutative vector bundles over the Vaksman-Soibelman quantum complex projective spaces
Francesca Arici, Piotr M. Hajac, Mariusz Tobolski
By a diagonal embedding of in , we prolongate the diagonal circle action on the Vaksman-Soibelman quantum sphere to the -action on the prolong…
A graded pullback structure of Leavitt path algebras of trimmable graphs
Piotr M. Hajac, Atabey Kaygun, Mariusz Tobolski
Motivated by recent results in graph C*-algebras concerning an equivariant pushout structure of the Vaksman-Soibelman quantum odd spheres, we introduce a class of graphs called tri…
The local-triviality dimension of actions of compact quantum groups
Eusebio Gardella, Piotr M. Hajac, Mariusz Tobolski +1
We define the local-triviality dimension for actions of compact quantum groups on unital C*-algebras. The resulting compact quantum principal bundle is said to be locally trivial w…