Séminaire Lotharingien de Combinatoire, B22m (1989), 18 pp.
[Formerly: Publ. I.R.M.A. Strasbourg, 1990, 414/S-22, p.
137-154.]
Jacques Riguet
Galois Correspondences in Category Theory
Abstract.
This title has been chosen because of shortness, but the real one is:
"Generalised Galois cormespondences in (generalised) category theory".
We shall try to explain in what sense those generalisations have to be
understood and what are our motivations for introducing them. At the
level of those words of introduction, it is enough to say that a
Galois correspondence being a pair of mappings between ordered sets
having to satisfy certain conditions, we generalise it by replacing
the mappings by difunctional relations and ordered sets by preordered
sets or at a later stage by categories or actegories.
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