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Space may refer to:

A space in mathematics is a synonym for set, usually with some other additional properties that make it more useful for study.

  • Also see aggregate, which has a similar sort of connotation, but vaguer.


Space is a word used to mean ordinary space, that is, the universe we live in.

The intuitive belief is that space is 3-dimensional and therefore isomorphic to the real vector space $\R^3$.