Issue no. 1 Table of Contents

Cartesian closed concrete categories
Notion of topology for bicategories
Cofibrations and the realization of non-deterministic automata
Spectra of differential rings
Manifolds of smooth maps IV : theorem of De Rham
A note on the locally Hausdorff property
On the categories Sp(X) and Ban(X)

Issue no. 2 Table of Contents

The derived functors of lim and protorsion modules
Le spectre d'un anneau dans l'algèbre constructive et applications à la dimension
On a family of varieties not satisfying Stoka's measurability condition
A note on the generalized reflexion of Guitart and Lair
Pullback and pushout squares in a special double category with connection
Note on homotopy pullbacks in abelian categories
The epis of the category of ordered algebras and Z-continuous homomorphisms
In which categories are first-order axiomatizable hulls characterizable by ultraproducts ?

Issue no. 3 Table of Contents

Analytic rings
Bounded functors, finite limits and an application of injective topoi
An exponential law for regular ordered Banach spaces
Calcul des satellites et présentations des bimodules à l'aide des carrés exacts

Issue no. 4 Table of Contents

Calcul des satellites et présentations des bimodules à l'aide des carrés exacts (2e partie)
Monoidal closed structures for topological spaces : counter-example to a question of Booth and Tillotson
Absolute colimits in enriched categories
On limits and colimits in the Kleisli category
Continuous families : categorical aspects