Idempotent Mal'cev conditions and 2-uniform congruences

• Autores: Gábor Czédli
• Localización: Algebra universalis, ISSN 0002-5240, Vol. 59, Nº. 3-4, 2008, págs. 303-309
• Idioma: inglés
• DOI: 10.1007/s00012-008-2047-3
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• Resumen

  • A congruence is called 2-uniform if all of its blocks have exactly two elements. We prove that if A is a finite algebra that satisfies a nontrivial idempotent Mal�cev condition then any two 2-uniform congruences of A permute