reserve c for Complex;
reserve r for Real;
reserve m,n for Nat;
reserve f for complex-valued Function;
reserve f,g for differentiable Function of REAL,REAL;
reserve L for non empty ZeroStr;
reserve x for Element of L;

theorem
  for L being non empty ZeroStr, p being sequence of L holds
  m <> n implies (p||n).m = p.m by FUNCT_7:32;
