Epimorphisms are not surjective, even in simple algebras

Logic Journal of the IGPL 20 (1):22-26 (2012)
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Abstract

Using techniques developed by Comer on sheaf-theoretic duality for cylindric algebras, we refine a result of Judit Madarász by showing that epimorphisms are not surjective even in the class of simple infinite dimensional cylindric algebras

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10.1093/jigpal/jzq047

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