theorem
  for s being SCM+FSA-State, t being Element of SCM+FSA-Data-Loc, u
being Integer, f being Element of SCM+FSA-Data*-Loc holds SCM+FSA-Chg(s,t,u).f
  = s.f
proof
  let s be SCM+FSA-State, t be Element of SCM+FSA-Data-Loc, u be Integer, mk
  be Element of SCM+FSA-Data*-Loc;
  (SCM*-VAL*SCM+FSA-OK).t = INT & (SCM*-VAL*SCM+FSA-OK).mk = INT* by Th5,Th6;
  then not mk in dom(t .--> u) by FUNCT_7:16,TARSKI:def 1;
  hence thesis by FUNCT_4:11;
end;
