<*mathematics*> A real-valued function modelling the length of
a vector. The norm must be homogeneous and symmetric
and fulfil the following condition: the shortest way to reach
a point is to go straight toward it. Every convex symmetric
closed surface surrounding point 0 introduces a norm by
means of Minkowski functional; all vectors that end on the
surface have the same norm then.

The most popular norm is the Euclidean norm.

Last updated: 2004-02-15

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**Nearby terms:**
NorCroft « NORD PL « NORDUnet « **norm** » normal distribution » normal form » normalisation

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Copyright Denis Howe 1985