Mathematical space

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A hierarchy of mathematical spaces: The inner product induces a norm.  The norm induces a metric.  The metric induces a topology.
A hierarchy of mathematical spaces: The inner product induces a norm. The norm induces a metric. The metric induces a topology.

A mathematical space is an informal term for any of many different kinds of set with added structure.

Mathematical spaces often form a hierarchy, i.e., one space may inherit all the characteristics of a parent space. For instance, all inner product spaces are also normed vector spaces, because the inner product induces a norm on the inner product space such that:

 \|x\| =\sqrt{\langle x, x\rangle}.

[edit] See also

en:Mathematical space