Innere Translationen der kleinen Kategorien
Introduction to coalgebra.
Kategorielle Mengenlehre: Eine Charakterisierung der Kategorie der Klassen und Abbildungen.
Large systems of independent objects in concrete categories. I
Large systems of independent objects in concrete categories. II
Morphisms in the category . Weak classifier of monomorphisms
On a mechanism of defining morphisms in concrete categories
On categories determined by poset- and set-valued functors
On categories into which each concrete category can be embedded
On closed lattices
On descriptive classification of set-functors. I.
On descriptive classification of set-functors. II.
On extensions of full embeddings and binding categories
On reflexive subobject lattices and reflexive endomorphism algebras
In this paper we study the reflexive subobject lattices and reflexive endomorphism algebras in a concrete category. For the category Set of sets and mappings, a complete characterization for both reflexive subobject lattices and reflexive endomorphism algebras is obtained. Some partial results are also proved for the category of abelian groups.
Predicative algebraic set theory.
Quelques problèmes typiques concernant les graphes multiplicatifs
Semidefinite functions on categories.
Set functor. II: Contravariant case
Set functors. III: Monomorphisms, epimorphisms, isomorphisms
Simmetrizzazioni di una categoria