2 papers
math.QA2026
Projective corepresentations and cohomology of compact quantum groups
Debashish Goswami, Kiran Maity
We study projective unitary (co)representations of compact quantum groups and the associated second cohomology theory. We introduce left/right/bi/strongly projective corepresentati…
math.QA2025
Second invariant cohomology of some finite-dimensional Hopf algebras
Debashish Goswami, Kiran Maity
We use categorical description of the invariant 2-cohomology group of Hopf algebra to compute such cohomology for two finite dimensional Hopf algebras: the group ring of $Z_8\rtime…