Idempotent Triples and Completion.
Implicit operations on the categories of universal algebras.
Induced Functors on Categories of Algebras.
Information systems in categories of valued relations.
The paper presents a categorical version of the notion of information system due to D. Scott. The notion of information system is determined in the framework of ordered categories with involution and division and the category of information systems is constructed. The essential role in all definitions and constructions play correlations between inclusion relations and entailment relations.
Injektive Objekte in gewissen Kategorien der Verbände
Inner actions and Galois -objects in a symmetric closed category
Integral Domain Type Representations in Sheaves and Other Topoi.
Integrating observational and computational features in the specification of state-based, dynamical systems
We present an abstract equational framework for the specification of systems having both observational and computational features. Our approach is based on a clear separation between the two categories of features, and uses algebra, respectively coalgebra to formalise them. This yields a coalgebraically-defined notion of observational indistinguishability, as well as an algebraically-defined notion of reachability under computations. The relationship between the computations yielding new system...
Integrating Observational and Computational Features in the Specification of State-Based, Dynamical Systems
We present an abstract equational framework for the specification of systems having both observational and computational features. Our approach is based on a clear separation between the two categories of features, and uses algebra, respectively coalgebra to formalise them. This yields a coalgebraically-defined notion of observational indistinguishability, as well as an algebraically-defined notion of reachability under computations. The relationship between the computations yielding new system states...
Internal object actions
We describe the place, among other known categorical constructions, of the internal object actions involved in the categorical notion of semidirect product, and introduce a new notion of representable action providing a common categorical description for the automorphism group of a group, for the algebra of derivations of a Lie algebra, and for the actor of a crossed module.
Introduction à l'analyse algébrique. II. Algèbres figuratives et esquisses
Introduction to coalgebra.
Iterative and metric algebraic theories