On an equivalence of system-theoretical and categorical concepts
On classification, logical educational materials, categories, and automata
On extensions of functors to the Kleisli category
On minimal realizations of behavior maps in categorial automata theory
On quasi-homomorphisms and compositions of automata
On the exact completion of the homotopy category
On the geometry of computations
On the homology of small categories and asynchronous transition systems.
On the relations between abstract and geometrical equivalence of abstract objects
One dimensional dynamics and factors of finite automata
One More Categorical Model of Universal Algebra.
Opérations sur les cartes et métamorphoses de la catégorie des G-ensembles.
We call metamorphosis of a given category an autoequivalence functor up to within natural equivalence. We show that, given a group G, the group of metamorphoses of the category of G-sets (as well as the corresponding group for ?sufficiently big? subcategories) may be naturally identified to the group of outer automorphism of G. We get by this way a natural description of a group of known operations on tessellations of a surface: the identity operation, the Poincaré duality, and four others which...
Ordinal invariants and epimorphisms in some categories of weak Hausdorff spaces