Many-sorted algebras in congruence modular varieties
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We present several basic results on many-sorted algebras, most of them only valid in congruence modular varieties. We describe a connection between the properties of many-sorted varieties and those of varieties of one sort and give some results on functional completeness, the commutator and Abelian algebras.
1991 Mathematics subject classification08A05 08A40 08B10
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