Shafaat, Ahmad On the structure of certain idempotent semigroups. (English) Zbl 0221.20078 Trans. Am. Math. Soc. 149, 371-378 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 Documents MSC: 20M07 Varieties and pseudovarieties of semigroups PDFBibTeX XMLCite \textit{A. Shafaat}, Trans. Am. Math. Soc. 149, 371--378 (1970; Zbl 0221.20078) Full Text: DOI References: [1] P. M. Cohn, Universal algebra, Harper & Row, Publishers, New York-London, 1965. · Zbl 0141.01002 [2] J. A. Gerhard and Ahmad Shafaat, Semivarieties of idempotent semigroups (prepublication copy). · Zbl 0215.40001 [3] J. R. Isbell, Subjects, adequacy, completeness and categories of algebras. [Subobjects, adequacy, completeness and categories of algebras], Rozprawy Mat. 36 (1964), 33. · Zbl 0133.26703 [4] Miyuki Yamada and Naoki Kimura, Note on idempotent semigroups. II, Proc. Japan Acad. 34 (1958), 110 – 112. · Zbl 0081.25501 [5] B. H. Neumann, Group properties of countable character (prepublication copy). · Zbl 0277.20062 [6] Ahmad Shafaat, On implicationally defined classes of algebras, J. London Math. Soc. 44 (1969), 137 – 140. · Zbl 0182.03101 · doi:10.1112/jlms/s1-44.1.137 [7] -, Characterizations of some universal classes of algebras, J. London Math. Soc. (to appear). · Zbl 0211.31904 [8] Takayuki Tamura, Attainability of systems of identities on semigroups, J. Algebra 3 (1966), 261 – 276. · Zbl 0146.02702 · doi:10.1016/0021-8693(66)90001-9 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.