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Categorical Aspects in Projective Geometry |
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| Authors: | Claude-Alain Faure Alfred Frölicher |
| Institution: | (1) Section de Mathématiques, Université de Genève, Case postale 240, CH-1211 Genève 24, Switzerland |
| Abstract: | After introducing morphisms between projective geometries, some categorical questions are examined. It is shown that there are three kinds of embeddings and two kinds of quotients. Furthermore the morphisms decompose in a canonical way into four factors. |
| Keywords: | morphisms and homomorphisms of projective geometries subgeometries and subspaces quotient geometries initial and final morphisms sections and retractions decomposition of a morphism |
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