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math.QA2024
Noncommutative differential geometry on crossed product algebras
Andrea Sciandra, Thomas Weber
We provide a differential structure on arbitrary cleft extensions for an -comodule algebra . This is achieved by constructing a covariant cal…
math.QA2024
Infinitesimal braidings and pre-Cartier bialgebras
A. Ardizzoni, L. Bottegoni, A. Sciandra +1
We propose an infinitesimal counterpart to the notion of braided category. The corresponding infinitesimal braidings are natural transformations which are compatible with an underl…