Clifford, A. H. Semigroups without nilpotent ideals. (English) Zbl 0045.30101 Am. J. Math. 71, 834-844 (1949). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 15 Documents Keywords:group theory PDF BibTeX XML Cite \textit{A. H. Clifford}, Am. J. Math. 71, 834--844 (1949; Zbl 0045.30101) Full Text: DOI OpenURL