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Browsing by UP Author "Wannenburg, Johann Joubert"
Now showing items 1-7 of 7
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Moraschini, Tommaso; Wannenburg, Johann Joubert (Elsevier, 2020-10)Please read abstract in the article.
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Moraschini, Tommaso; Raftery, James G.; Wannenburg, Johann Joubert (Springer, 2021-01)Please read abstract in the article.
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Moraschini, Tommaso; Raftery, James G.; Wannenburg, Johann Joubert (Springer, 2020-04)We characterize, in syntactic terms, the ranges of epimorphisms in an arbitrary class of similar first-order structures (as opposed to an elementary class). This allows us to strengthen a result of Bacsich, as follows: in ...
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Wannenburg, Johann Joubert; Raftery, James G. (Springer, 2024-01)A representation theorem is proved for De Morgan monoids that are (i) semilinear, i.e., subdirect products of totally ordered algebras, and (ii) negatively generated, i.e., generated by lower bounds of the neutral element. ...
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Moraschini, Tommaso; Raftery, James G.; Wannenburg, Johann Joubert (Wiley, 2020-07)Please read abstract in the article.
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Moraschini, Tommaso; Raftery, James G.; Wannenburg, Johann Joubert (Cambridge University Press, 2020)The variety DMM of De Morgan monoids has just four minimal subvarieties. The join-irreducible covers of these atoms in the subvariety lattice of DMM are investigated. One of the two atoms consisting of idempotent algebras ...
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Moraschini, Tommaso; Raftery, James G.; Wannenburg, Johann Joubert (Elsevier, 2019-07)Please read abstract in the article.
Now showing items 1-7 of 7