Editing Norm (section)

=== In mathematics ===
* [[Norm (mathematics)]], a map that assigns a length or size to a mathematical object, including:
** [[Vector norm]], a map that assigns a length or size to any vector in a vector space
** [[Matrix norm]], a map that assigns a length or size to a matrix
** [[Operator norm]], a map that assigns a length or size to any operator in a function space
** [[Norm (abelian group)]], a map that assigns a length or size to any element of an abelian group
* [[Field norm]] a map in algebraic number theory and Galois theory that generalizes the usual distance norm
* [[Ideal norm]], the ideal-theoretic generalization of the field norm
* [[Norm (group)]], a certain subgroup of a group
* Norm map, a map from a pointset into the ordinals inducing a [[prewellordering]]
* [[Norm group]], a group in class field theory that is the image of the multiplicative group of a field
* Norm function, a term in the study of [[Euclidean domain]]s, sometimes used in place of "Euclidean function"
* [[Norm (descriptive set theory)]], a map from a set into the ordinals