Geodesic
Hu's Primal Algebra Theorem revisited
Commentationes Mathematicae Universitatis Carolinae, Tome 41 (2000) no. 4, pp. 855-859 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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It is shown how Lawvere's one-to-one translation between Birkhoff's description of varieties and the categorical one (see [6]) turns Hu's theorem on varieties generated by a primal algebra (see [4], [5]) into a simple reformulation of the classical representation theorem of finite Boolean algebras as powerset algebras.
It is shown how Lawvere's one-to-one translation between Birkhoff's description of varieties and the categorical one (see [6]) turns Hu's theorem on varieties generated by a primal algebra (see [4], [5]) into a simple reformulation of the classical representation theorem of finite Boolean algebras as powerset algebras.
Classification : 06B20, 06D25, 08A40, 08B99, 18C05
Keywords: Lawvere theory; equivalence between varieties; Hu's theorem; primal algebra; Post algebras 
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Porst, Hans-E. Hu's Primal Algebra Theorem revisited. Commentationes Mathematicae Universitatis Carolinae, Tome 41 (2000) no. 4, pp. 855-859. http://geodesic.mathdoc.fr/item/CMUC_2000_41_4_a18/