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A cohomological interpretation of the reflexive Brauer group

✍ Scribed by Lieven Le Bruyn

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 234 KB
Volume: 105
Category: Article
ISSN: 0021-8693
DOI: 10.1016/0021-8693(87)90190-6

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That is, for a cocommuta-Ž . Ž . Ž . tive irreducible coalgebra C, the homomorphism y \*: Br C ª Br C\* is injective. The proof uses Morita᎐Takeuchi theory and the linear topology of all closed Ž . cofinite left ideals in C\*. As an inmediate consequence, Br C is a torsion group. Ž . Some cases wher