McLean, David Idempotent semigroups. (English) Zbl 0055.01404 Am. Math. Mon. 61, 110-113 (1954). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 74 Documents Keywords:Group theory PDF BibTeX XML Cite \textit{D. McLean}, Am. Math. Mon. 61, 110--113 (1954; Zbl 0055.01404) Full Text: DOI OpenURL