On tolerance relations

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On tolerance relations. (English). Czechoslovak Mathematical Journal, vol. 36 (1986), issue 4, pp. 662-667

MSC: 08A30, 20M10, 92A25, 92A27 | MR 863194 | Zbl 0611.20038 | DOI: 10.21136/CMJ.1986.102123

References:

[1] Petrich M.: Introduction to Semigroups. Merrill Publishing Co., Ohio (1973). MR 0393206 | Zbl 0321.20037

[2] Zelinka В.: Tolerances in algebraic structures. Czech. Math. J. 20 (1970), 179-183. MR 0260653

[3] Zelinka В.: Tolerances in algebraic structures II. Czech. Math. J. 25 (1975), 175-178. MR 0457323

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