how to construct a Matrix of matrices element??

[Sallygreen]

I would say that it depends on what you are using for any one matrix. I would guess that you are using a class, though that depends on the language. Does the matrix class only accept numbers? If so, you might have to write your own matrix class that can hold matrix classes. How difficult this would be would depend largely on the functionality you are putting into it. First off, though, what is the language, and what construct are you currently using?

thanks, actually I ma using Fortran77, and I used a loop to construct each matrix, so I have all the elements of the partitioned matrix, but I do not know how to write the indices to construct the main matrix, as I need it to solve a linear system