On the structure of semigroups which are unions of groups
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- by R. J. Warne
- Trans. Amer. Math. Soc. 186 (1973), 385-401
- DOI: https://doi.org/10.1090/S0002-9947-1973-0333049-6
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Abstract:
We characterize semigroups S which are unions of groups as generalized Schreier products of groups, semilattices of right zero semigroups, and semilattices of left zero semigroups. We then give several specializations of this result utilizing Schreier products, semidirect products, and direct products.References
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Bibliographic Information
- © Copyright 1973 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 186 (1973), 385-401
- MSC: Primary 20M10
- DOI: https://doi.org/10.1090/S0002-9947-1973-0333049-6
- MathSciNet review: 0333049