function Ai = ex_estab_d_OP06a_ex5()
%function Ai = ex_estab_d_OP06a_ex5()
% Discrete-time uncertain system used for robust stability evaluation purposes. This systems was
% used in (Oliveira & Peres, SCL 2006), Example 5.

A1 = [0.5 -0.2 0.4
    0.0 -0.5 -0.2
    0.3 0.0 -0.9],

A2 = [ 0.4 -0.9 -1.3
    -0.8 0.4 1.2
    1.2 0.3 -0.2];

A3 = [0.2 0.3 0.4
    -0.3 -0.1 0.7
    0.3 0.2 0.5];

Ai = [A1 A2 A3];