We study the descent problem of modules over general extensions of noncommutative rings and give different interpretations of descent data. We consider in particular the case of Hopf-Galois extensions. When descent data exist, we classify them by non-Abelian cohomology sets and deduce a noncommutative version of Hilbert's Theorem 90.
机构:
Imperial Coll London, South Kensington Campus, London SW7 2AZ, England
Imperial Coll London, South Kensington Campus, London SW7 2AZ, EnglandImperial Coll London, South Kensington Campus, London SW7 2AZ, England