Browsing by Subject "H-Galois extensions"
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H-Galois extensions with normal basis for weak Hopf algebras
(International Electronic Journal of Algebra, 2017)Let H be a weak Hopf algebra and let A be an H-comodule algebra with subalgebra of coinvariants AH. In this paper we introduce the notion of H-Galois extension with normal basis and we prove that AH ,→ A is an H-Galois ...