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Completions in Subvarieties of BL-algebras
Manuela Busaniche and Leonardo Manuel Cabrer

In the present paper we extend the results of [4] by completely characterizing dual canonical subvarieties of BL-algebras. These are subvarieties of algebras that satisfy the equation xk = xk+1 for some integer k ≥ 1. As a corollary we get a full description of subvarieties of BL-algebras that admit completions.

Keywords: Completions, BL-algebras, Canonical Extensions, Distributive lattices, Basic logic

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