Projective and indecomposable \(S\)-acts (Q1585573)
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scientific article; zbMATH DE number 1531234
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Projective and indecomposable \(S\)-acts |
scientific article; zbMATH DE number 1531234 |
Statements
Projective and indecomposable \(S\)-acts (English)
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16 November 2000
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Let \(S\) be a semigroup. The authors describe unitary projective objects in full subcategories of \(S\)-Act, containing \(S\) and closed under coproducts and summands as exactly those isomorphic to \(\coprod_{i\in I}Se_i\), \(e_i\in E(S)\).
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\(S\)-acts
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projective acts
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indecomposable acts
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coproducts
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direct sums
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0.8905619
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0.8792646
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0.87145555
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0.87139004
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