reserve i,j,k,m,n for Nat,
  f for FinSequence of the carrier of TOP-REAL 2,
  G for Go-board;

theorem Th6:
  for C be compact non vertical non horizontal Subset of TOP-REAL 2
  for n be Nat holds Lower_Seq(C,n)/.1 = E-max L~Cage(C,n)
proof
  let C be compact non vertical non horizontal Subset of TOP-REAL 2;
  let n be Nat;
  Lower_Seq(C,n) = Rotate(Cage(C,n),W-min L~Cage(C,n)):-E-max L~Cage(C,n )
  by JORDAN1E:def 2;
  hence thesis by FINSEQ_5:53;
end;
