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Pondělíček, Bedřich
A Relation for Closure Operations on a Semigroup. (English). Matematický časopis, vol. 23 (1973), issue 3, pp. 249-256
MSC: 20M10 | MR 0364509 | Zbl 0265.20053
References:
[1] PONDĚLÍČEK B.: On a certain relation for closure operations on a semigroup. Czechoslovak Math. J. 20 (95), 1970, 220-231. MR 0260905 | Zbl 0198.34304
[2] CALAIS J.: Demi-groupes quasi-inversifs. C. r. Acad. sci. 252, 1961, 2357-2359. MR 0123628 | Zbl 0097.01104
[3] Ляпин E. C.: Полугрупп. Mocквa 1960. Zbl 1004.90500
[4] PONDĚLÍČEK B.: A certain equivalence on a semigroup. Czechoslovak Math. J. 21 (96), 1971. 109-117. MR 0283110 | Zbl 0217.36404
[5] GREEN J. A.: On the structure of semigroups. Ann. Math. 54, 1951, 163-172. MR 0042380 | Zbl 0043.25601
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