Tensor products of topological ringoids
Déjà vingt ans ...
Multiple functors. II. The monoidal closed category of multiple categories
Multiple functors. IV. Monoidal closed structures on
Multiple functors. III. The cartesian closed category
Catégories localement triviales. Catégories microtransitives
In introduction to the “3e colloque sur les catégories, dédié à Charles Ehresmann”
Partial completions of concrete functors
Liste des publications de Charles Ehresmann
Programme du 3e colloque sur les catégories, dédié à Charles Ehresmann
From fibre bundles to categories
Fifty years of research
Colimits in free categories
Trentième anniversaire
«Charles Ehresmann : 100 ans»
Erratum
Sur Paulette Libermann (1919-2007)
How Charles Ehresmann's vision of geometry developed with time
In the mid fifties, Charles Ehresmann defined Geometry as "the theory of more or less rich structures, in which algebraic and topological structures are generally intertwined". In 1973 he defined it as the theory of differentiable categories, their actions and their prolongations. Here we explain how he progressively formed this conception, from homogeneous spaces to locally homogeneous spaces, to fibre bundles and foliations, to a general notion of local structures, and to a new foundation of differential...
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