Good afternoon, I've a problem in implementing the following model in Matlab. in particular, I'm not confident in using summations in this way. I'm thinking about a double circle for with i and j but it doesn't works. initial guess for Bj=1.

g{ij}=A{i}*O{i}*B{j}*D{j}*f(ij)

with

A{i}=1\sum{j} D{j}B{j}f(ij)

B{j}=1\sum{i} A{i}O{i}f(ij)

known: O{i},D{j},f(ij)

I've to find A{i},B{j}

[Torsten]

A(i)=B(j)=0 for all i,j.