with(LinearAlgebra);A:= Matrix(10);A[1,2]:= 1;
A[1,6]:=1;
A[1,9]:= 1;
A[2,3]:=1;
A[2,8]:=1;
A[3,4]:=1;
A[3,7]:=1;
A[4,5]:=1;
A[4,9]:=1;
A[5,6]:=1;
A[5,8]:=1;
A[6,7]:=1;
A[7,10]:=1;
A[8,10]:=1;
A[9,10]:=1;
for i from 2 to 10 do
for j from 1 to i do
A[i,j]:= A[j,i];
od:od:A;A2:= MatrixMatrixMultiply(A,A);
Trace(A2);A3 := MatrixMatrixMultiply(A,A2);Eigenvalues(A);TTdSMApJNlJUQUJMRV9TQVZFLzMxOTA2NjUzNlgsJSlhbnl0aGluZ0c2IjYiW2dsISIlISEhI19xIisiKyIiISIiIkYnRidGJ0YoRidGJ0YoRidGKEYnRihGJ0YnRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YoRidGJ0YnRidGJ0YoRidGKEYnRidGJ0YoRidGJ0YnRidGKEYnRihGJ0YoRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YnRidGJ0YoRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YoRidGJ0YnRidGKEYoRidGJ0YoRidGJ0YnRidGJ0YoRidGJ0YnRidGJ0YnRihGKEYoRidGJg==TTdSMApJNlJUQUJMRV9TQVZFLzMxOTA2NjUzNlgsJSlhbnl0aGluZ0c2IjYiW2dsISIlISEhI19xIisiKyIiISIiIkYnRidGJ0YoRidGJ0YoRidGKEYnRihGJ0YnRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YoRidGJ0YnRidGJ0YoRidGKEYnRidGJ0YoRidGJ0YnRidGKEYnRihGJ0YoRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YnRidGJ0YoRidGJ0YoRidGJ0YnRihGJ0YoRidGJ0YoRidGJ0YnRidGKEYoRidGJ0YoRidGJ0YnRidGJ0YoRidGJ0YnRidGJ0YnRihGKEYoRidGJg==TTdSMApJNlJUQUJMRV9TQVZFLzMxOTY4MTg0OFgsJSlhbnl0aGluZ0c2IjYiW2dsISIlISEhI19xIisiKyIiJCIiISIiIkYpRilGKEYpRilGKEYpRihGJ0YoRilGKUYpRilGKEYpRilGKUYoRidGKEYpRilGKEYpRilGKUYpRilGKEYnRihGKUYpRilGKEYpRilGKUYpRihGJ0YoRilGKEYpRilGKEYpRilGKUYoRidGKEYpRilGKUYpRilGKEYpRilGKEYnRilGKUYoRilGKEYpRilGKEYpRilGJ0YpRihGKEYpRilGKEYpRilGKUYpRidGKEYpRilGKUYpRilGKUYoRihGKEYnRiY=TTdSMApJNlJUQUJMRV9TQVZFLzMxOTI5ODY0MFgsJSlhbnl0aGluZ0c2IjYiW2dsISIlISEhI19xIisiKyIiISIiJiIiI0YpRilGKEYpRilGKEYpRihGJ0YoRilGKUYpRilGKEYpRilGKUYoRidGKEYpRilGKEYpRilGKUYpRilGKEYnRihGKUYpRilGKEYpRilGKUYpRihGJ0YoRilGKEYpRilGKEYpRilGKUYoRidGKEYpRilGKUYpRilGKEYpRilGKEYnRilGKUYoRilGKEYpRilGKEYpRilGJ0YpRihGKEYpRilGKEYpRilGKUYpRidGKEYpRilGKUYpRilGKUYoRihGKEYnRiY=TTdSMApJNlJUQUJMRV9TQVZFLzMxOTUyNjExMlgqJSlhbnl0aGluZ0c2IjYiW2dsISMlISEhIisiKyIiJCEiI0YoRihGKCIiIkYpRilGKUYpRiY=