M =[
A B C
D E F
G H I
]
So, a bit of a long shot here, but does anyone then recognise the following symmetrical 4x4 matrix:
N = [
A+E+I F-H G-C B-D
F-H A-E-I B+D G+C
G-C B+D -A+E-I F+H
B-D G+C F+H -A-E+I
]
( BTW the sum of its diagonal elements is zero. ) Any hints at all would be gratefully received.
Thanks in advance,
Graham
[Edited by - Fruny on August 30, 2005 10:08:29 AM]