How large are left exact functors?
Adámek, J., Trenková, V. (2001)
Theory and Applications of Categories [electronic only]
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Displaying similar documents to “Birkhoff's Covariety Theorem without limitations”
How large are left exact functors?
Essentially equational categories
J. Adámek, H. Herrlich, J. Rosický (1988)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
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The point of the empty set
Michael Barr (1972)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
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Gaps and dualities in Heyting categories
Jaroslav Nešetřil, Aleš Pultr, Claude Tardif (2007)
Commentationes Mathematicae Universitatis Carolinae
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We present an algebraic treatment of the correspondence of gaps and dualities in partial ordered classes induced by the morphism structures of certain categories which we call Heyting (such are for instance all cartesian closed categories, but there are other important examples). This allows to extend the results of [14] to a wide range of more general structures. Also, we introduce a notion of combined dualities and discuss the relation of their structure to that of the plain ones. ...