[Numpy-discussion] A question on vector and matrix norms

[Nils Wagner]

Hi,

I'm interested in efficient implementations of various vector and matrix
norms.
Please can anyone give me some short examples regarding the following
norms
for

vectors :

1. Frobenius norm
2. L_1 norm is sum of absolute values
3. L_2 norm
4. L_\infty or maximum norm
5. p-norm

and matrices:

matrix spectral norm or matrix 2-norm
Frobenius norm ||A||_F
p-norms ||A||_p

Thanks in advance.

                                            Nils