Issue no. 1 Table of Contents

Duality of vector spaces
Duality of Banach spaces
On categories into which each concrete category can be embedded
Quelques remarques sur les feuilletages affines
Natural factorizations and the Kan extension of cohomology theories
Dualities of concrete categories

Issue no. 2 Table of Contents

Abstract homotopy theory in procategories
Completely regular relational algebras
Axiomatisation de la catégorie des catégories
Foncteur pleinement fidèle dense classant les algèbres
On simply bireflective subcategories
Some invariant theory among quasi-projectives

Issue no. 3 Table of Contents

Closed categories and topological vector spaces
Sur les quasi-limites
On categorical shape theory
Topological properties of the real numbers object in a topos
Sur le théorème de complétion de Buchwalter-Pupier

Issue no. 4 Table of Contents

Closed categories and Banach spaces
Double groupoids and crossed modules
Complétion monadique
G-variétés topologiques et G-microfibrés