reserve a,b,i,k,m,n for Nat;
reserve s,z for non zero Nat;
reserve c for Complex;

theorem Th1:
  c|^5 = c*c*c*c*c
  proof
A1: 5 = 4+1;
    c|^4 = c*c*c*c by POLYEQ_5:3;
    hence thesis by A1,NEWTON:6;
  end;
