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projective relation

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  • Projective geometry — is a non metrical form of geometry, notable for its principle of duality. Projective geometry grew out of the principles of perspective art established during the Renaissance period, and was first systematically developed by Desargues in the 17th …   Wikipedia

  • Relation d'objet — La relation d objet est, en psychanalyse, le rapport du sujet avec les objets qui constituent le monde dans lequel il vit. Mais il est important de considérer que ce monde est d essence tout autant interne qu externe. Ce qui rend la notion d… …   Wikipédia en Français

  • Relation reduction — In logic and mathematics, relation reduction and relational reducibility have to do with the extent to which a given relation is determined by an indexed family or a sequence of other relations, called the relation dataset . The relation under… …   Wikipedia

  • Projective space — In mathematics a projective space is a set of elements constructed from a vector space such that a distinct element of the projective space consists of all non zero vectors which are equal up to a multiplication by a non zero scalar. A formal… …   Wikipedia

  • Projective plane — See real projective plane and complex projective plane, for the cases met as manifolds of respective dimension 2 and 4 In mathematics, a projective plane has two possible definitions, one of them coming from linear algebra, and another (which is… …   Wikipedia

  • Projective frame — In the mathematical field of projective geometry, a projective frame is an ordered collection of points in projective space which can be used as reference points to describe any other point in that space. For example: * Given three distinct… …   Wikipedia

  • Projective Hilbert space — In mathematics and the foundations of quantum mechanics, the projective Hilbert space P ( H ) of a complex Hilbert space H is the set of equivalence classes of vectors v in H , with v ne; 0, for the relation given by : v w when v = lambda; w with …   Wikipedia

  • Duality (projective geometry) — A striking feature of projective planes is the symmetry of the roles played by points and lines in the definitions and theorems, and (plane) duality is the formalization of this metamathematical concept. There are two approaches to the subject of …   Wikipedia

  • Geometrie projective — Géométrie projective La géométrie projective est le domaine des mathématiques qui modélise les notions intuitives de perspective et d horizon. Elle étudie les propriétés des figures inchangées par projection. Sommaire 1 Considérations historiques …   Wikipédia en Français

  • Géométrie Projective — La géométrie projective est le domaine des mathématiques qui modélise les notions intuitives de perspective et d horizon. Elle étudie les propriétés des figures inchangées par projection. Sommaire 1 Considérations historiques 2 Aperçu élémentaire …   Wikipédia en Français

  • Real projective plane — In mathematics, the real projective plane is the space of lines in R3 passing through the origin. It is a non orientable two dimensional manifold, that is, a surface, that has basic applications to geometry, but which cannot be embedded in our… …   Wikipedia

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