Pierce, R. S. Homomorphisms of semi-groups. (English) Zbl 0055.01502 Ann. Math. (2) 59, 287-291 (1954). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 9 Documents Keywords:Group theory PDFBibTeX XMLCite \textit{R. S. Pierce}, Ann. Math. (2) 59, 287--291 (1954; Zbl 0055.01502) Full Text: DOI