reserve k,j,n for Nat,
  r for Real;
reserve x,x1,x2,y for Element of REAL n;
reserve f for real-valued FinSequence;
reserve p,p1,p2,p3 for Point of TOP-REAL n,
  x,x1,x2,y,y1,y2 for Real;
reserve p,p1,p2 for Point of TOP-REAL 2;

theorem
  REAL 0 = {0.TOP-REAL 0}
proof
  thus REAL 0 = { <*>REAL } by FINSEQ_2:94
    .= {0.TOP-REAL 0};
end;
