Hall, Robert E. The translational hull of an N-semigroup. (English) Zbl 0252.20065 Pac. J. Math. 41, 379-389 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 20M10 General structure theory for semigroups PDF BibTeX XML Cite \textit{R. E. Hall}, Pac. J. Math. 41, 379--389 (1972; Zbl 0252.20065) Full Text: DOI