A characterization of congruence classes of quasigroups

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A characterization of congruence classes of quasigroups. (English). Mathematica Slovaca, vol. 50 (2000), issue 4, pp. 377-380

MSC: 08A30, 20N05 | MR 1857296 | Zbl 0988.08001

References:

[1] BRUCK R. H.: A Survey of Binary Systems. Springer Verlag, Berlin-Göttingen-Heidelberg, 1971. MR 0093552

[2] JEŽEK J.: Normal subsets of quasigroups. Comment. Math. Univ. Carolin. 16 (1975), 77-85. MR 0367104 | Zbl 0303.20051

[3] MAL'CEV A. I.: On the general theory of algebraic systems. Mat. Sb. 35 (1954), 3-20. MR 0065533

[4] WERNER H.: A Mal'cev condition on admissible relations. Algebra Universalis 3 (1973), 263. MR 0330009

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