reserve P for Subset of TOP-REAL 2,
  f,f1,f2,g for FinSequence of TOP-REAL 2,
  p,p1,p2,q,q1,q2 for Point of TOP-REAL 2,
  r1,r2,r19,r29 for Real,
  i,j,k,n for Nat;

theorem
  for f being S-Sequence_in_R2 st i in dom f holds f/.i in L~f
proof
  let f be S-Sequence_in_R2;
  len f >= 2 by TOPREAL1:def 8;
  hence thesis by GOBOARD1:1;
end;
