3 citations · 5 across the 8 of their papers we have counts for
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math.RA2001
The structure of corings with a grouplike element
Tomasz Brzezinski
Characteristic properties of corings with a grouplike element are analysed. Associated differential graded rings are studied. A correspondence between categories of comodules and f…
math.QA2001
Non-commutative 4-spheres based on all Podleś 2-spheres and beyond
Tomasz Brzezinski, Cezary Gonera
A wide class of noncommutative spaces, including 4-spheres based on all the quantum 2-spheres and suspensions of matrix quantum groups is described. For each such space a noncommut…
math.QA2001
Doi-Koppinen modules for quantum groupoids
Tomasz Brzezinski, Stefaan Caenepeel, Gigel Militaru
A definition of a Doi-Koppinen datum over a noncommutative algebra is proposed. The idea is to replace a bialgebra in a standard Doi-Koppinen datum with a bialgebroid. The correspo…