- theory of projection
- мат.проективная геометрия
English-Russian scientific dictionary. 2008.
theory of projection
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Projection (set theory) — In set theory, a projection is one of two closely related types of functions or operations, namely:* A set theoretic operation typified by the j th projection map, written mathrm{proj} {j}!, that takes an element vec{x} = (x 1, ldots, x j, ldots … Wikipedia
Projection (mathematics) — Commutativity of this diagram is the universality of projection π, for any map f and set X. Generally speaking, in mathematics, a projection is a mapping of a set (or of a mathematical structure) which is idempotent, which means that a projection … Wikipedia
Projection-valued measure — In mathematics, particularly functional analysis a projection valued measure is a function defined on certain subsets of a fixed set and whose values are self adjoint projections on a Hilbert space. Projection valued measures are used to express… … Wikipedia
Projection (linear algebra) — Orthogonal projection redirects here. For the technical drawing concept, see orthographic projection. For a concrete discussion of orthogonal projections in finite dimensional linear spaces, see vector projection. The transformation P is the… … Wikipedia
Projection (relational algebra) — IntroductionIn relational algebra, a projection is a unary operation written as pi {a 1, ...,a n}( R ) where a 1,...,a n is a set of attribute names. The result of such projection is defined as the set obtained when the components of the tuple R… … Wikipedia
Projection — Contents 1 Chemistry 2 Mathematics 3 Other 4 See also … Wikipedia
Theory of relativity — This article is about the scientific concept. For philosophical or sociological theories about relativity, see Relativism. For the silent film, see The Einstein Theory of Relativity. Two dimensional projection of a three dimensional analogy of… … Wikipedia
GSO projection — The GSO projection (named after Ferdinando Gliozzi, Joël Scherk, and David A. Olive) is an ingredient used in constructing a consistent model in superstring theory. The projection is a selection of a subset of possible vertex operators in the… … Wikipedia
Conspiracy theory — For other uses, see Conspiracy theory (disambiguation). For a list of conspiracy theories, see List of conspiracy theories. A conspiracy theory explains an event as being the result of an alleged plot by a covert group or organization or, more… … Wikipedia
Knot theory — A three dimensional depiction of a thickened trefoil knot, the simplest non trivial knot … Wikipedia
Gate control theory of pain — The gate control theory of pain, put forward by Ronald Melzack (a Canadian psychologist) and Patrick David Wall (a British physician) in 1962, [P.D. Wall, R. Melzack, On nature of cutaneous sensory mechanisms, Brain, 85:331, 1962.] and again in… … Wikipedia
