Geodesic
On a certain relation for closure operation on a semigroup
Czechoslovak Mathematical Journal, Tome 20 (1970) no. 2, pp. 220-231
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DOI : 10.21136/CMJ.1970.100962
Classification : 20.93, 22.00 
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Pondělíček, Bedřich. On a certain relation for closure operation on a semigroup. Czechoslovak Mathematical Journal, Tome 20 (1970) no. 2, pp. 220-231. doi: 10.21136/CMJ.1970.100962

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