Definition:Euclidean Metric/Complex Plane

From ProofWiki
Jump to navigation Jump to search


Let $\C$ be the complex plane.

The Euclidean metric on $\C$ is defined as:

$\d \forall z_1, z_2 \in \C: \map d {z_1, z_2} := \size {z_1 - z_2}$

where $\size {z_1 - z_2}$ denotes the modulus of $z_1 - z_2$.

Also known as

The Euclidean metric is sometimes also referred to as the usual metric.

Also see

  • Results about the Euclidean metric can be found here.

Source of Name

This entry was named for Euclid.

Historical Note

Euclid himself did not in fact conceive of the Euclidean metric and its associated Euclidean space, Euclidean topology and Euclidean norm.

They bear that name because the geometric space which it gives rise to is Euclidean in the sense that it is consistent with Euclid's fifth postulate.