Volume 24 (1983) no. 2

Table of contents

The derived functors of lim and protorsion modules
p. 115-131
Le spectre d'un anneau dans l'algèbre constructive et applications à la dimension
p. 133-144
On a family of varieties not satisfying Stoka's measurability condition
p. 145-154
A note on the generalized reflexion of Guitart and Lair
p. 155-159
Pullback and pushout squares in a special double category with connection
p. 161-192
Note on homotopy pullbacks in abelian categories
p. 193-202
The epis of the category of ordered algebras and Z-continuous homomorphisms
p. 203-214
In which categories are first-order axiomatizable hulls characterizable by ultraproducts ?
p. 215-222