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

Nils Wagner nwagner at isd.uni-stuttgart.de
Wed Jul 25 03:15:26 CDT 2001


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






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