piecewise-linear manifold
41Moise's theorem — In geometric topology, a branch of mathematics, Moise s theorem, proved by Moise (1952), states that any topological 3 manifold has an essentially unique piecewise linear structure and smooth structure. The analogue of Moise s theorem in… …
42Jordan–Schönflies theorem — In mathematics, the Jordan–Schönflies theorem, or simply the Schönflies theorem, of geometric topology is a sharpening of the Jordan curve theorem.FormulationIt states that not only does every simple closed curve in the plane separate the plane… …
43Chua's circuit — A version of Chua s circuit without Chua s Diode Chua s circuit is a simple electronic circuit that exhibits classic chaos theory behavior. It was introduced in 1983 by Leon O. Chua, who was a visitor at Waseda University in Japan at that… …
44H-cobordism — A cobordism W between M and N is an h cobordism if the inclusion maps : M hookrightarrow W quadmbox{and}quad N hookrightarrow Ware homotopy equivalences. If mbox{dim},M = mbox{dim},N = nand mbox{dim},W = n+1, it is called an n+1 dimensional h… …
45Knot theory — A three dimensional depiction of a thickened trefoil knot, the simplest non trivial knot …
46Differential geometry of surfaces — Carl Friedrich Gauss in 1828 In mathematics, the differential geometry of surfaces deals with smooth surfaces with various additional structures, most often, a Riemannian metric. Surfaces have been extensively studied from various perspectives:… …
47Metric tensor — In the mathematical field of differential geometry, a metric tensor is a type of function defined on a manifold (such as a surface in space) which takes as input a pair of tangent vectors v and w and produces a real number (scalar) g(v,w) in a… …
48Holonomy — Parallel transport on a sphere depends on the path. Transporting from A → N → B → A yields a vector different from the initial vector. This failure to return to the initial vector is measured by the holonomy of the connection. In differential… …
49Orbifold — 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”,… …
50Integral — This article is about the concept of integrals in calculus. For the set of numbers, see integer. For other uses, see Integral (disambiguation). A definite integral of a function can be represented as the signed area of the region bounded by its… …
