The crossed coproduct theorem and Galois cohomology (Q677434)
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scientific article; zbMATH DE number 997607
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The crossed coproduct theorem and Galois cohomology |
scientific article; zbMATH DE number 997607 |
Statements
The crossed coproduct theorem and Galois cohomology (English)
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25 August 1997
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A cohomological interpretation of the Brauer group of a coalgebra is given using the notion of Galois coextensions and Galois cohomology. A crossed coproduct structure theorem is proved, as well as a dual version of the classical splitting theorem.
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Brauer groups
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coalgebras
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Galois coextensions
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Galois cohomology
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crossed coproducts
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splitting theorems
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0.92745304
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0.9144212
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0.9140898
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0.91260564
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0.9089428
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0.9086406
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0.9062023
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