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dimension

Maximum number of independent directions within a mathematical space

EntityinvariantQ4440864

Also known as dimensionality · number of dimensions

Instance of: invariant
Subclass of: mathematical property

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

In physics and mathematics, the dimension of a mathematical space is informally defined as the minimum number of coordinates needed to specify any point within it. Thus, a line has a dimension of one (1D) because only one coordinate is needed to specify a point on it – for example, the point at 5 on a number line. A surface, such as the boundary of a cylinder or sphere, has a dimension of two (2D) because two coordinates are needed to specify a point on it – for example, both a latitude and longitude are required to locate a point on the surface of a sphere. A two-dimensional Euclidean space is a two-dimensional space on the plane. The inside of a cube, a cylinder or a sphere is three-dimensional (3D) because three coordinates are needed to locate a point within these spaces.

Overview

All data

35 statements · 26% with external sources · numbers in brackets are citations

Different from: dimension of a vector space
Dimension
Counts: relative direction
Characteristic of: space

On other databases

27 identifiers linking dimension across the web's reference databases

Data quality

statements

26%

externally sourced

Source last edited October 2, 2026. AIDB refreshes this page daily.

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AIDB. (2026). dimension (Q4440864). Retrieved from https://aidb.si/e/dimension-Q4440864