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Modalities for an Allegorical Conceptual Data Model
(MDPI AG, 2014)
Allegories are enriched categories generalizing a category of sets and binary relations. In this paper, we extend a new, recently-introduced conceptual data model based on allegories by adding support for modal operators ...
Semientwining Structures and Their Applications
(Hindawi Publishing Corporation, 2012-10-31)
Semientwining structures are proposed as concepts simpler than entwining structures, yet they are shown to have interesting
applications in constructing intertwining operators and braided algebras, lifting functors, ...
Weak n-Ary Relational Products in Allegories
(MDPI AG, 2014)
Allegories are enriched categories generalizing a category of sets and binary relations. Accordingly, relational products in an allegory can be viewed as a generalization of Cartesian products. There are several definitions ...