reserve x for set;
reserve a, b, c for Real;
reserve m, n, m1, m2 for Nat;
reserve k, l for Integer;
reserve p, q for Rational;
reserve s1, s2 for Real_Sequence;

theorem Th11:
  for n being natural Number holds a>=1 implies a |^ n >= 1
proof
  let n be natural Number;
  assume a>=1;
  then a |^ n >= 1 |^ n by Th9;
  hence thesis by NEWTON:10;
end;
