(1) Departamento de Matemática, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina
Abstract:
In this paper, the variety of closure n-valued Łukasiewicz algebras, that is, Łukasiewicz algebras of order n endowed with a closure operator, is investigated. The lattice of subvarieties in the particular case in which the open elements
form a three-valued Heyting algebra is obtained.