Central Elements in Varieties with the F
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Diego Vaggione
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Article
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1999
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Elsevier Science
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English
β 149 KB
Combining [14, Lemma 3] with [8] it can be proved that the following conditions for a variety V are equivalent: (1) No nontrivial algebra of V has a trivial subalgebra. (2) There exist unary terms 0 1 (w), ..., 0 N (w), 1 1 (w), ..., 1 N (w) such that V< 09 (w)=19 (w) Γ x= y, where 09 =(0 1 , ...,