On a subvariety of semi-De Morgan algebras |
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| Authors: | C. Palma R. Santos |
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| Affiliation: | (1) Departamento de Matemática, Faculdade de Ciências, Universidade de Lisaboa Campo Grande, Bloco C1 Piso 3, 1749-016 Lisboa, Portugal |
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| Abstract: | A characterization of principal congruences of the subvariety C of semi-DeMorgan algebras is given. This characterization is applied to determine the subdirectly irreducible algebras of the variety C and to describe a poset such that the lattice of its order ideals is isomorphic to the lattice of subvarieties of C. This revised version was published online in June 2006 with corrections to the Cover Date. |
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| Keywords: | semi-De Morgan algebra principal congruence subdirectly irreducible algebra |
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