Norms of Vectors and Matrices
John A. Todd · Birkhäuser Basel eBooks · 1977
Much work done on computers with vectors and matrices is approximation mathematics, and it is necessary to be able to say when one vector is near another, or when a vector is small, and similarly for matrices. For this purpose the idea of norm was introduced. In most cases the norm of a 1 -dimensional vector or matrix is the absolute value of the number.