- tubular neighborhood
- мат. трубчатая окрестность
Большой англо-русский и русско-английский словарь. 2001.
tubular neighborhood
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Tubular neighborhood — In mathematics, a tubular neighborhood of a submanifold of a smooth manifold is an open set around it resembling the normal bundle. The idea behind a tubular neighborhood can be explained in a simple example. Consider a smooth curve in the plane… … Wikipedia
Dehn surgery — In topology, a branch of mathematics, a Dehn surgery, named after Max Dehn, is a specific construction used to modify 3 manifolds. The process takes as input a 3 manifold together with a link. Dehn surgery can be thought of as a two stage process … Wikipedia
Neighbourhood (mathematics) — For the concept in graph theory, see Neighbourhood (graph theory). A set V in the plane is a neighbourhood of a point p if a small disk around p is contained in V … Wikipedia
Dehn twist — A positive Dehn twist applied to a cylinder about the red curve c modifies the green curve as shown. In geometric topology, a branch of mathematics, a Dehn twist is a certain type of self homeomorphism of a surface (two dimensional manifold).… … Wikipedia
Exotic sphere — In differential topology, a mathematical discipline, an exotic sphere is a differentiable manifold M that is homeomorphic but not diffeomorphic to the standard Euclidean n sphere. That is, M is a sphere from the point of view of all its… … Wikipedia
Whitehead manifold — In mathematics, the Whitehead manifold is an open 3 manifold that is contractible, but not homeomorphic to R3. Henry Whitehead discovered this puzzling object while he was trying to prove the Poincaré conjecture.A contractible manifold is one… … Wikipedia
Seifert fiber space — A Seifert fiber space is a 3 manifold together with a nice decomposition as a disjoint union of circles. In other words it is a S^1 bundle (circle bundle) over a 2 dimensional orbifold. Most small 3 manifolds are Seifert fiber spaces, and they… … Wikipedia
List of mathematics articles (T) — NOTOC T T duality T group T group (mathematics) T integration T norm T norm fuzzy logics T schema T square (fractal) T symmetry T table T theory T.C. Mits T1 space Table of bases Table of Clebsch Gordan coefficients Table of divisors Table of Lie … Wikipedia
2-sided — In topology, a compact codimension one submanifold F of a manifold M is said to be 2 sided in M when there is an embedding ::hcolon F imes [ 1,1] o M with h(x,0)=x for each xin F and ::h(F imes [ 1,1] )cap partial M=h(partial F imes [ 1,1] ).This … Wikipedia
Slam-dunk — For the basketball move, see slam dunk (note the lack of a hyphen). In mathematics, particularly low dimensional topology, the slam dunk is a particular modification of a given surgery diagram in the 3 sphere for a 3 manifold. The name, but not… … Wikipedia
gland — An organized aggregation of cells functioning as a secretory or excretory organ. SYN: glandula (1) [TA]. [L. glans, acorn] accessory g. a small mass of glandular structure, detached from but lying near another and larger g., to which it is… … Medical dictionary
