Issue 1 I
The topology of critical processes, III (Computing homotopy)
Pages 3-18
Marco Grandis
Topics in the categorical algebra of closure spaces
Pages 19-35
George Janelidze, Manuela Sobral
The weak subobject classifier axiom and modules in Sup
Pages 36-64
Ulrich Höhle
A constructive account of the Kan–Quillen model structure and of Kan’s Ex∞ functor
Pages 65-124
Simon Henry