Category Theory : Applications to Algebra Logic and Topology Proceedings of the International Conference Held at Gummersbach July 6–10 1981 A note on the homology of regular nearness spaces The symmetry of the Cauchy completion of a category On algebraic localizations A canonical action on indexed limits an application to coherent homotopy A remark on cartesian closedness Crossed complexes and non abelian extensions Un critere de representabilite par sections continues de faisceaux Kan extensions and systems of imprimitivity Smooth structures Enriched algebras spectra and homotopy limits General construction of monoidal closed structures in topological uniform and nearness spaces The fundamental groupoid and the homotopy crossed complex of an orbit space Minimal topological completion of KBan1KVec On the freeness of Whitehead diagrams Applications of category theory to uniform structures A categorical framework for interpolation theory Toposes are monadic over categories Essentially monadic adjunctions Decomposition of morphisms into infinitely many factors Remarks on radicals in categories On the structure of factorization structures A remark on scattered spaces Bornological L1 functors as Kan extensions and Riesz like representations Exactness and projectivity Constructive arithemtics Adjoint diagonals for topological completions Internal categories and crossed modules Subdirect irreducibility and congruences Algebraic categories of topological spaces Extensions of a theorem of p.gabriel Characterization of bicategories of stacks On hom functors and tensor products of topological vector spaces Unnatural isomorphisms of products in a category Categories of kits coloured graphs and games.