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Płonka, Jerzy
Subdirectly irreducible groupoids in some varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 4, pp. 631-645
MSC: 08A30, 08B05, 08B15, 08B20, 20L05 | MR 738559 | Zbl 0543.08007
References:
[1] J. DUDEK: A new characterization of groupoids with at most n essentially $n$-ary polynomials. Bull. de la Soc. Royale des Sol. de Liège, 48, n° 9-10 (1980), 390-392. MR 0614329 | Zbl 0464.20045
[2] G. GRÄTZER: Universal algebra. Springer-Verlag, 1979. MR 0538623
[3] J. PŁONKA: On algebras with n distinct essentially $n$-ary operations. Algebra Universalis, vol. 1 , fasc. 1 (1971), 73-79. MR 0286928
[4] J. PŁONKA: Subdirectly irreducible algebras with exactly $n$ essentially $n$-ary polynomials. to appear.
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