for n being Nat
for C being connected compact non horizontal non vertical Subset of (TOP-REAL 2)
for k being Nat st 1 <= k & k + 1 <= len (Cage (C,n)) & (Cage (C,n)) /. k = W-min (L~ (Cage (C,n))) holds
((Cage (C,n)) /. (k + 1)) `1 = W-bound (L~ (Cage (C,n)))