Norm[expr] gives the norm of a number or array.
Norm[expr, p] gives the -norm.
For complex numbers, Norm[z] is Abs[z].
For vectors, Norm[v] is Sqrt[v . Conjugate[v]].
Norm[v, p] is Total[Abs[v^p]]^(1/p).
Norm[v, Infinity] is the -norm given by Max[Abs[v]].
For matrices, Norm[m] gives the maximum singular value of m.
Norm can be used on SparseArray objects.
See Section 1.8.3.
See also: Abs, Dot, Total, SingularValueList, Integrate.
New in Version 5.0.