Cahiers de topologie et géométrie différentielle, Volume 18 (1977)

Issue no. 1 Table of Contents

Fermeture standard des catégories algébriques II

Lair, Christian

p. 3-60

An extended comparison functor for triples

Perry, Robert J.

p. 61-65

Calcul des relations inverses

Guitart, René

p. 67-100

Issue no. 2 Table of Contents

Sheaves and concepts : a model-theoretic interpretation of Grothendieck topoi

Reyes, Gonzalo E.

p. 105-137

Coherent prohomotopical algebra

Porter, Timothy

p. 139-179

Sur les quasi-topos

Penon, Jacques

p. 181-218

Issue no. 3 Table of Contents

A closed category of reflexive topological abelian groups

Barr, Michael

p. 221-248

On categories into which each concrete category can be embedded. II

Koubek, Václav

p. 249-269

Principal homogeneous objects as representable functors

Van Osdol, D. H.

p. 271-289

Internal presheaves toposes

Bunge, Marta

p. 291-330

Issue no. 4 Table of Contents

Décompositions et Lax-complétions

Guitart, René; Van den Bril, Luc

p. 333-407

An abstract setting for homotopy pushouts and pullbacks

Spencer, Christopher B.

p. 409-429

Erratum à l'article « Double groupoids and crossed modules »

Brown, R.; Spencer, C. B.

p. 430

Déjà vingt ans ...

Ehresmann, Charles; Ehresmann, Andrée

p. 431-432