fibered link
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Fibered knot — A knot or link Kin the 3 dimensional sphere S^3 is called fibered (sometimes spelled fibred) in case there is a 1 parameter family F t of Seifert surfaces for K, where the parameter t runs through the points of the unit circle S^1, such that if s … Wikipedia
Figure-eight knot (mathematics) — In knot theory, a figure eight knot (also called Listing s knot) is the unique knot with a crossing number of four. This is the smallest possible crossing number except for the unknot and trefoil knot. Origin of name The name is given because… … Wikipedia
Orbifold — This terminology should not be blamed on me. It was obtained by a democratic process in my course of 1976 77. An orbifold is something with many folds; unfortunately, the word “manifold” already has a different definition. I tried “foldamani”,… … Wikipedia
List of knot theory topics — Knot theory is the study of mathematical knots. While inspired by knots which appear in daily life in shoelaces and rope, a mathematician s knot differs in that the ends are joined together so that it cannot be undone. In precise mathematical… … Wikipedia
Algebraic stack — In algebraic geometry, an algebraic stack is a concept introduced to generalize algebraic varieties, schemes, and algebraic spaces. They were originally proposed in a 1969 paper[1] by Pierre Deligne and David Mumford to define the (fine) moduli… … Wikipedia
3-manifold — In mathematics, a 3 manifold is a 3 dimensional manifold. The topological, piecewise linear, and smooth categories are all equivalent in three dimensions, so little distinction is usually made in whether we are dealing with say, topological 3… … Wikipedia
Torus knot — In knot theory, a torus knot is a special kind of knot which lies on the surface of an unknotted torus in R3. Similarly, a torus link is a link which lies on the surface of a torus in the same way. Each torus knot is specified by a pair of… … Wikipedia
Manifold decomposition — In topology, a branch of mathematics, a manifold M may be decomposed or split by writing M as a combination of smaller pieces. When doing so, one must specify both what those pieces are and how they are put together to form M. Manifold… … Wikipedia
HISTORY — For Prehistory see archaeology ; for Biblical and Second Temple periods, see history . Destruction of the Second Temple until the Arab Conquest (70–640 C.E.) THE EFFECTS OF THE WAR OF 66–70 C.E. The Jewish war against the Romans, which lasted… … Encyclopedia of Judaism
Central economic region — ( ru. Центральный экономический район, Tsentralny ekonomichesky rayon ) is one of twelve economic regions of Russia. Area: 484,000 km²; population: 30.5 million (2002 Census). Average population density mdash;63/km². Over 80% of the population is … Wikipedia
Open book decomposition — In mathematics, an open book decomposition (or simply an open book) is a decomposition of a closed oriented 3 manifold M into a union of surfaces (necessarily with boundary) and solid tori. Open books have relevance to contact geometry, with a… … Wikipedia
