User:LittleWhole/Ten-dimensional space

In mathematics, a sequence of n real numbers can be understood as a location in n-dimensional space. When n = 10, the set of all such locations is called 10-dimensional space. Often such spaces are studied as vector spaces, without any notion of distance. Ten-dimensional Euclidean space is ten-dimensional space equipped with a Euclidean metric, which is defined by the dot product.[Dubious – discuss]

More generally the term may refer to a ten-dimensional vector space over any field, such as an ten-dimensional complex vector space, which has 20 real dimensions. It may also refer to an Ten-dimensional manifold such as an 10-sphere, or a variety of other geometric constructions.

10-polytope
Main article: Uniform 10-polytope

A polytope in ten dimensions is called a 10-polytope. The most studied are the regular polytopes, of which there are only three in ten dimensions: the 10-simplex, 10-cube, and 10-orthoplex. A wider family are the uniform 10-polytopes, constructed from fundamental symmetry domains of reflection, each domain defined by a Coxeter group. Each uniform polytope is defined by a ringed Coxeter-Dynkin diagram. The 10-demicube is a unique polytope from the D10 family, and 621, 261, and 162 polytopes from the E10 family.