Funes el memorioso

>> A=[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1;
1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0; 
1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1; 
1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1; 
1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1; 
1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0; 
1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0; 
1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0; 
1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 1; 
1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0; 
1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1]; 

>> B = [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0;
0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1;
0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0;
0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0;
0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0;
0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1;
0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1;
0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1;
0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0;
0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1;
0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0;]

>> G = [Z A Z B;A' Z B' Z;Z B Z A;B' Z A' Z];

>> eig(G)

ans =

  -12.0000
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -3.4641
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
   -0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
    3.4641
   12.0000

>> % 3.4641^2 = 12

>> A = [1 1 1 1; 1 1 0 0;1 0 1 0; 1 0 0 1];
>> B = [0 0 0 0; 0 0 1 1;0 1 0 1; 0 1 1 0];

>> (A-B)*(A-B)'

ans =

     4     0     0     0
     0     4     0     0
     0     0     4     0
     0     0     0     4

>> >> G = [Z A Z B;A' Z B' Z;Z B Z A;B' Z A' Z];

>> eig(G)

ans =

   -4.0000
   -2.0000
   -2.0000
   -2.0000
   -2.0000
   -0.0000
   -0.0000
   -0.0000
    0.0000
    0.0000
    0.0000
    2.0000
    2.0000
    2.0000
    2.0000
    4.0000