Useful english dictionary. 2012.
Sphere (film) — Infobox Film name = Sphere caption = Sphere Movie Poster director = Barry Levinson producer = Barry Levinson writer = Michael Crichton (novel) Kurt Wimmer (adaptation) Stephen Hauser Paul Attanasio (screenplay) starring = Dustin Hoffman Sharon… … Wikipedia
Sphere — Globose redirects here. See also Globose nucleus. A sphere (from Greek σφαίρα sphaira , globe, ball, [ [http://www.perseus.tufts.edu/cgi bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%23101561 Sphaira, Henry George Liddell, Robert Scott,… … Wikipedia
Sphere theorem — This article is about sphere theorem for Riemannian manifolds. For a different result by the same name, see Sphere theorem (3 manifolds). In Riemannian geometry, the sphere theorem, also known as the quarter pinched sphere theorem, strongly… … Wikipedia
Sphere packing — In mathematics, sphere packing problems are problems concerning arrangements of non overlapping identical spheres which fill a space. Usually the space involved is three dimensional Euclidean space. However, sphere packing problems can be… … Wikipedia
Sphere Builder — Star Trek race|if= bgcolor=#ffffff Name=Sphere Builders other names= Caption=A Guardian Sphere Builder Affiliation=NoneThe Sphere Builders are aliens from another dimension in the fictional Star Trek universe. They are bent on conquering the… … Wikipedia
Sphere (novel) — infobox Book | name = Sphere title orig = translator = image caption = First edition cover author = Michael Crichton illustrator = cover artist = country = United States language = English series = genre = Science Fiction, Techno thriller, Novel… … Wikipedia
Sphere theorem (3-manifolds) — In the topology of 3 manifolds, the sphere theorem denotes a family of statements which show us how the image of a 2 sphere, under a continuous map into a 3 manifold, may behave.One example is the following:Let M be an orientable 3 manifold such… … Wikipedia
Sphere world — A sphere world is a mathematical concept used in robotic motion planning. Essentially, if the environment is represented as a sphere, and the robot and obstacles within the environment are represented as spheres, then it is possible to construct… … Wikipedia
3-sphere — Stereographic projection of the hypersphere s parallels (red), meridians (blue) and hypermeridians (green). Because this projection is conformal, the curves intersect each other orthogonally (in the yellow points) as in 4D. All curves are circles … Wikipedia
Lie sphere geometry — is a geometrical theory of planar or spatial geometry in which the fundamental concept is the circle or sphere. It was introduced by Sophus Lie in the nineteenth century. [The definitive modern textbook on Lie sphere geometry is Harvnb|Cecil|1992 … Wikipedia
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