Semidirect products of categorical groups. Obstruction theory (Q5940669)
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scientific article; zbMATH DE number 1633287
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Semidirect products of categorical groups. Obstruction theory |
scientific article; zbMATH DE number 1633287 |
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Semidirect products of categorical groups. Obstruction theory (English)
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13 August 2001
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A categorical group is a monoidal category in which each morphism has an inverse under composition and each object has a quasi-inverse under tensor product. The split extensions of one categorical group acting on another are classified in this paper. An obstruction theory is developed generalizing that of group cohomology.
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categorical group
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semidirect product
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obstruction theory
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