168 citations · 267 across the 20 of their papers we have counts for
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math.RA2006
Morita theory for coring extensions and cleft bicomodules
Gabriella Böhm, Joost Vercruysse
A Morita context is constructed for any comodule of a coring and, more generally, for an -$\cC$ bicomodule for a pure coring extension $(\cD:L)$ of $(\cC:A)$. It is related…
math.RA2005★ 4 cited
Strong connections and the relative Chern-Galois character for corings
Gabriella Böhm, Tomasz Brzezinski
The Chern-Galois theory is developed for corings or coalgebras over non-commutative rings. As the first step the notion of an entwined extension as an extension of algebras within…
math.RA2004★ 5 cited
Galois theory for Hopf algebroids
Gabriella Böhm
An extension B\subset A of algebras over a commutative ring k is an H-extension for an L-bialgebroid H if A is an H-comodule algebra and B is the subalgebra of its coinvariants. It…