On 11-06-05 9:36 AM, Lara Poplarski wrote:
Dear All,
Could someone please suggest how to find the Kronecker sum of two 2x2
matrices,
i.e. given two matrices:
-A A
a -a
and
-B B
b -b
I need:
-A-B A B 0
a -a-B 0 B
b 0 -A-b A
0 b a -a-b
Why not do it in the obvious way?
A <- matrix1[1,2]
a <- matrix1[2,1]
B <- matrix2[1,2]
b <- matrix2[2,1]
matrix(c(-A-B,a,b,0, A,-a-B,0,b, B,0,-A-b,a, 0,B,A,-a-b), 4,4)
Duncan Murdoch
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