Burgess, D. A. A problem on semi-groups. (English) Zbl 0186.31303 Stud. Sci. Math. Hung. 4, 9-11 (1969). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 8 Documents Keywords:generalized groups, semigroups × Cite Format Result Cite Review PDF