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- De_Sitter_space abstract "In mathematics and physics, a de Sitter space is the analog in Minkowski space, or spacetime, of a sphere in ordinary, Euclidean space. The n-dimensional de Sitter space, denoted , is the Lorentzian manifold analog of an n-sphere (with its canonical Riemannian metric); it is maximally symmetric, has constant positive curvature, and is simply-connected for n at least 3. The de Sitter space, as well as the Anti-de Sitter space is named after Willem de Sitter (1872-1934), professor of astronomy at Leiden University and director of the Leiden Observatory. Willem de Sitter and Albert Einstein worked in the 1920's in Leiden closely together on the space-time structure of our universe. In the language of general relativity, de Sitter space is the maximally symmetric, vacuum solution of Einstein's field equations with a positive (repulsive) cosmological constant (corresponding to a positive vacuum energy density and negative pressure). When n = 4 (3 space dimensions plus time), it is a cosmological model for the physical universe; see de Sitter universe.De Sitter space was discovered by Willem de Sitter, and, at the same time, independently by Tullio Levi-Civita.More recently it has been considered as the setting for Special Relativity rather than using Minkowski space, since a group contraction reduces the isometry group of de Sitter space to the Poincaré group, allowing a unification of the spacetime translation subgroup and Lorentz transformation subgroup of the Poincaré group into a simple group rather than a semi-simple group. This alternate formulation of Special Relativity is called de Sitter relativity.".
- De_Sitter_space wikiPageID "301666".
- De_Sitter_space wikiPageRevisionID "604873236".
- De_Sitter_space author "Qingming Cheng".
- De_Sitter_space hasPhotoCollection De_Sitter_space.
- De_Sitter_space id "d/d110040".
- De_Sitter_space title "De Sitter space".
- De_Sitter_space subject Category:Exact_solutions_in_general_relativity.
- De_Sitter_space subject Category:Riemannian_geometry.
- De_Sitter_space type Abstraction100002137.
- De_Sitter_space type ExactSolutionsInGeneralRelativity.
- De_Sitter_space type Matter100020827.
- De_Sitter_space type Mixture114586258.
- De_Sitter_space type Part113809207.
- De_Sitter_space type PhysicalEntity100001930.
- De_Sitter_space type Relation100031921.
- De_Sitter_space type Solution114589223.
- De_Sitter_space type Substance100019613.
- De_Sitter_space comment "In mathematics and physics, a de Sitter space is the analog in Minkowski space, or spacetime, of a sphere in ordinary, Euclidean space. The n-dimensional de Sitter space, denoted , is the Lorentzian manifold analog of an n-sphere (with its canonical Riemannian metric); it is maximally symmetric, has constant positive curvature, and is simply-connected for n at least 3.".
- De_Sitter_space label "De Sitter space".
- De_Sitter_space label "De Sitter-metriek".
- De_Sitter_space label "De-Sitter-Raum".
- De_Sitter_space label "Espace de Sitter".
- De_Sitter_space label "Métrica de De Sitter".
- De_Sitter_space label "Przestrzeń de Sittera".
- De_Sitter_space label "Модель де Ситтера".
- De_Sitter_space sameAs De_Sitterův_prostoročas.
- De_Sitter_space sameAs De-Sitter-Raum.
- De_Sitter_space sameAs Métrica_de_De_Sitter.
- De_Sitter_space sameAs Espace_de_Sitter.
- De_Sitter_space sameAs 더_시터르_공간.
- De_Sitter_space sameAs De_Sitter-metriek.
- De_Sitter_space sameAs Przestrzeń_de_Sittera.
- De_Sitter_space sameAs m.01rzd0.
- De_Sitter_space sameAs Q1179448.
- De_Sitter_space sameAs Q1179448.
- De_Sitter_space sameAs De_Sitter_space.
- De_Sitter_space wasDerivedFrom De_Sitter_space?oldid=604873236.
- De_Sitter_space isPrimaryTopicOf De_Sitter_space.