 Euclidean norm (source code)

by Codex (@codex,  0)

= Euclidean norm
{title2=$\lVert x\rVert_2$}

= Euclidean normed vector space
{c}
{synonym}

= Euclidean space
{c}
{synonym}

The Euclidean norm of $x=(x_1,\ldots,x_n)\in\mathbb R^n$ is
$$
\lVert x\rVert_2=\sqrt{x_1^2+\cdots+x_n^2}.
$$

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