J. Austral. Math. Soc.
72 (2002), 181-197
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Free algebras in the variety of three-valued closure algebras
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M. Abad
Departamento de Matemática
Universidad Nacional del Sur
8000 Bahía Blanca
Argentina
imabad@criba.edu.ar
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and
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J. P. Díaz Varela
Departamento de Matemática
Universidad Nacional del Sur
8000 Bahía Blanca
Argentina
usdiavar@criba.edu.ar
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Abstract
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In this paper, the variety of three-valued
closure algebras, that is, closure algebras with
the property that the open elements form a
three-valued Heyting algebra, is investigated.
Particularly, the structure of the finitely
generated free objects in this variety is
determined.
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