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  1.  32
    Priestley Duality for Quasi-Stone Algebras.Hernando Gaitán - 2000 - Studia Logica 64 (1):83-92.
    In this paper we describe the Priestley space of a quasi-Stone algebra and use it to show that the class of finite quasi-Stone algebras has the amalgamation property. We also describe the Priestley space of the free quasi-Stone algebra over a finite set.
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  2.  17
    A Non-Finitely Based Quasi-Variety of de Morgan Algebras.Hernando Gaitán & Milton H. Perea - 2004 - Studia Logica 78 (1-2):237 - 248.
    In this paper we exhibit a non-finitely based, finitely generated quasi-variety of De Morgan algebras and determine the bottom of the lattices of sub-quasi-varieties of Kleene and De Morgan algebras.
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  3.  5
    Free Algebras in Certain Varieties of Distributive Pseudocomplemented De Morgan Algebras.Hernando Gaitán - 1998 - Mathematical Logic Quarterly 44 (4):553-567.
    In this paper we characterize the join irreducible elements of the free algebras on n free generators in the subvarieties of the variety V0 of pseudocomplemented De Morgan algebras satisfying the identity xx′* = ′*.
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  4.  26
    Representation of Finite Demi-P-Lattices by Means of Posets.Hernando Gaitan - 1996 - Studia Logica 56 (1-2):97 - 110.
    Finite demi-p-lattices are described in terms of the poset of its join irreducible elements endowed with a suitable set of maps. Description of the free algebras of demi-p-lattices and almost-p-lattices with n free generators are given.
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  5.  5
    Varieties of Quasi-Stone Algebras.Hernando Gaitán - 2001 - Annals of Pure and Applied Logic 108 (1-3):229-235.
    In this note we give equational bases for varieties of quasi-Stone algebras.
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