Issue no. 1 Table of Contents

Disconnectednesses cogenerated by Hausdorff spaces
p. 3-8
Complete theories in 2-categories
p. 9-57
Wedge product of forms in synthetic differential geometry
p. 59-66
A unified approach to the lifting of adjoints
p. 67-77

Issue no. 2 Table of Contents

Models for synthetic supergeometry
p. 87-108
A right exactness property for internal categories
p. 109-155
A simple proof that localic subgroups are closed
p. 157-161
Erratum to “On free topological algebras”
p. 163

Issue no. 3 Table of Contents

A farewell to Evelyn Nelson
p. 171-174
Essentially equational categories
p. 175-192
Frames in Priestley's duality
p. 193-202
Orthogonal and prereflective subcategories
p. 203-215
Simultaneous representations by metric spaces
p. 217-239
Some combinatorial calculus on Lie derivative
p. 241-247

Issue no. 4 Table of Contents

Trentième anniversaire
p. 255-256
Categorical differential calculus for infinite dimensional spaces
p. 257-286
Homotopy preserving functors
p. 287-296
On the geometry of computations, II
p. 297-326