 reserve x for set,
         n,m,k for Nat,
         r for Real,
         V for RealLinearSpace,
         v,u,w,t for VECTOR of V,
         Av for finite Subset of V,
         Affv for finite affinely-independent Subset of V;
reserve pn for Point of TOP-REAL n,
        An for Subset of TOP-REAL n,
        Affn for affinely-independent Subset of TOP-REAL n,
        Ak for Subset of TOP-REAL k;
reserve EV for Enumeration of Affv,
        EN for Enumeration of Affn;

theorem Th16:
  for x being object holds
  for E be Enumeration of Av holds len (x|--E) = card Av
proof let x be object;
  let E be Enumeration of Av;
  rng E=Av by Def1;
  then len E=card Av by FINSEQ_4:62;
  hence thesis by FINSEQ_2:33;
 end;
