Let ni, n₂, ... , n₂, n_t be positive integers such that n₁ + n₂ + • · · + n_t = n and for each i let M_i be an n_i X n_i matrix. Let M be then X n matrix 

where the main diagonal of each M_i lies on the main diagonal of M. For each permutation σ of {1, 2, ..., t), M is similar to the matrix 

Transcribed Image Text:

M₁ M₂ 0 0 M₁