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Tuesday 31 August 2004, by D. P.

Set of proposals logically deduced from a few non-demonstrable principles, and which, according to some, may form a basis for geographical analysis. Several types of axiomatics have been proposed :

- a geometric axiomatics defining geographical space as a set of places identified by coordinates, separated by a distance and endowed with attributes (Béguin, Thisse, 1979, see also Bunge, 1962);

- a genetic axiomatics introduced by G. Nicolas (chorologic axiom stating: "peut être géographique tout objet qui au sens statistique du terme différencie l’espace terrestre" [1]; situation axiom: "peut être géographique tout objet (matériel ou immatériel) en rapport spatial avec un objet situé (totalement ou partiellement) en un autre endroit de la surface terrestre" [2] ; succession axiom);

- a theoretical axiomatics by H. Reymond (1981): "les sociétés humaines redistribuent sans arrêt et sans toujours en évaluer les conséquences, les prédicats de l’espace dans l’étendue" ." [3]

[1"may be geographical any object which in the statistical meaning of the term differentiates terrestrial space" (courtesy translation)

[2"may be geographical any (material or immaterial) object in spatial relationship with an object (totally or partially) located in another place of the surface of the globe" (courtesy translation)

[3human societies continually and without always estimating the consequences, re-distribute the predicates of space in the extent" (courtesy translation)