Metric and Norm
A metric on a Cartesian product of metric spaces, and a norm on a direct product of normed vector spaces, can be defined in various ways, see for example p-norm.
Read more about this topic: Direct Product
Famous quotes containing the word norm:
“A society that presumes a norm of violence and celebrates aggression, whether in the subway, on the football field, or in the conduct of its business, cannot help making celebrities of the people who would destroy it.”
—Lewis H. Lapham (b. 1935)