Klein may refer to:

People

Klein (surname) Klein is the Dutch, German and Afrikaans word for "small", which came to be used as a surname, and thence passed into the names of places, concepts and discoveries associated with bearers of this surname. It is also a common Jewish surname in the ...

* Klein (musician)

Places

* Klein (crater), a lunar feature * Klein, Montana, United States * Klein, Texas, United States * Klein (Ohm), a river of Hesse, Germany, tributary of the Ohm * Klein River, a river in the Western Cape province of South Africa

Business

* Klein Bikes, a bicycle manufacturer * Klein Tools, a manufacturer *

S. Klein S. Klein On The Square, or simply S. Klein, was a popular-priced department store chain based in New York City. The flagship stores (a main building and a women's fashion building) were located along Union Square East in Manhattan; this locat ...

, a department store * Klein Modellbahn, an Austrian model railway manufacturer

Arts

* Klein + M.B.O., an Italian musical group * Klein Award, for comic art *

Yves Klein Yves Klein (; 28 April 1928 – 6 June 1962) was a French artist and an important figure in post-war European art. He was a leading member of the French artistic movement of Nouveau réalisme founded in 1960 by art critic Pierre Restany. Klein wa ...

, French artist

Mathematics

Klein bottle In topology, a branch of mathematics, the Klein bottle () is an example of a non-orientable surface; it is a two-dimensional manifold against which a system for determining a normal vector cannot be consistently defined. Informally, it is a ...

, an unusual shape in topology *

Klein geometry In mathematics, a Klein geometry is a type of geometry motivated by Felix Klein in his influential Erlangen program. More specifically, it is a homogeneous space ''X'' together with a transitive action on ''X'' by a Lie group ''G'', which acts ...

Klein configuration In geometry, the Klein configuration, studied by , is a geometric configuration related to Kummer surface In algebraic geometry, a Kummer quartic surface, first studied by , is an irreducible nodal surface of degree 4 in \mathbb^3 with the m ...

, in geometry *

Klein cubic (disambiguation) Klein cubic can refer to: * Klein cubic surface *Klein cubic threefold In algebraic geometry, the Klein cubic threefold is the non-singular cubic threefold in 4-dimensional projective space given by the equation :V^2W+W^2X+X^2Y+Y^2Z+Z^2V =0 \, ...

Klein graphs In the mathematical field of graph theory, the Klein graphs are two different but related regular graphs, each with 84 edges. Each can be embedded in the orientable surface of genus 3, in which they form dual graphs. The cubic Klein graph This ...

, in graph theory *

Klein model Klein may refer to: People *Klein (surname) *Klein (musician) Places * Klein (crater), a lunar feature * Klein, Montana, United States *Klein, Texas, United States * Klein (Ohm), a river of Hesse, Germany, tributary of the Ohm * Klein River, a r ...

, or Beltrami–Klein model, a model of hyperbolic geometry *

Klein polyhedron In the geometry of numbers, the Klein polyhedron, named after Felix Klein, is used to generalize the concept of continued fractions to higher dimensions. Definition Let \textstyle C be a closed simplicial cone in Euclidean space \textstyle \ ...

, a generalization of continued fractions to higher dimensions, in the geometry of numbers *

Klein surface In mathematics, a Klein surface is a dianalytic manifold of complex dimension 1. Klein surfaces may have a boundary and need not be orientable. Klein surfaces generalize Riemann surfaces. While the latter are used to study algebraic curves over t ...

, a dianalytic manifold of complex dimension 1

Other uses

* Kleins,

Lineman's pliers Lineman's pliers (US English), Kleins (genericized trademark, US usage), linesman pliers (Canadian English), side cutting linesman pliers and combination pliers (UK / US English) are a type of pliers used by linemen, electricians, and other trade ...

, a hand tool used by electricians and others *

Klein Technique Klein may refer to: People *Klein (surname) * Klein (musician) Places * Klein (crater), a lunar feature * Klein, Montana, United States * Klein, Texas, United States * Klein (Ohm), a river of Hesse, Germany, tributary of the Ohm * Klein River, a ...

, a movement/dance technique developed by Susan Klein and studied by