On Yetter's invariant and an extension of the Dijkgraaf-Witten invariant to categorical groups.
Stability Results for Topological Spaces.
Abstract homotopy theory in procategories
Coherent prohomotopy theory
Coherent prohomotopical algebra
Une théorie catégorique d'homotopie simple
The derived functors of and protorsion modules
Essential properties of pro-objects in Grothendieck categories
Crossed modules in and a Brown-Spencer theorem for -categories
Stability of algebraic inverse systems, I: Stability, weak stability and the weakly-stable socle
Variations on a theme of homotopy
The aim of this article is to bring together various themes from fairly elementary homotopy theory and to examine them, in part, from a historical and philosophical viewpoint.
A homotopy double groupoid of a Hausdorff space.
A homotopy double groupoid of a Hausdorff space. II: A van Kampen theorem.
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