Good day,

Before this I've run my programme (n=2 and 3), it's ok. But now, when I run the same programme (for n=4), it's got error, why?. This is my programme.

> isom:=proc(A,B,n)

locali,j,k,s,r,eqns,t,ISM,BChange,sols,l,S1,S2,C;

C:=matrix(n,n);

BChange:=matrix(n,n);

ISM:=0;

eqns:={};

for i to n do

for j to n do

for l to n do

S1:=sum(A[i,j,k]*C[l,k],k=1..n);S2:=sum(C[p,i]*(sum(C[r,j]*B[p,r,l],r=1..n)),p=1..n); eqns:=union(eqns,{S1=S2})

end do end do end do;

sols:=[solve(eqns)];

Somebody named Alec have gave me this programme after he modified my old programme.

How to convert this equation?

RootOf(_Z^2+alpha+_Z, label = _L3)

and why this programme take long time to evaluate?

Good day, I cannot run this maple, why?

I use Maple 11. Sometimes, the result become more then one when it run. Then the results are same. How to make it to give difference result?

Thanks.