theorem Th98:
  for p be prime Nat holds p divides a + b implies
    p divides a|^(2*n+1) + b|^(2*n+1)
  proof
    let p be prime Nat;
   A1:  a+b divides a|^(2*n+1) + b|^(2*n+1) by NEWTON01:35;
    assume p divides a + b;
    hence thesis by A1,INT_2:9;
  end;
