Quantum Torsors and Hopf-galois Objects
نویسنده
چکیده
We prove that every faithfully flat Hopf-Galois object is a quantum torsor in the sense of Grunspan.
منابع مشابه
Quantum Torsors with Fewer Axioms
We give a definition of a noncommutative torsor by a subset of the axioms previously given by Grunspan. We show that noncommutative torsors are an equivalent description of Hopf-Galois objects (without specifying the Hopf algebra). In particular, this shows that the endomorphism θ featuring in Grunspan’s definition is redundant.
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تاریخ انتشار 2002