theorem
  the InitS of M in the FinalS of M implies
  (the OFun of M).the InitS of M is_result_of s, M
proof
  assume
A1: the InitS of M in the FinalS of M;
  take 1;
  let w;
  assume w.1 = s;
  thus thesis by A1,FSM_1:def 2,NAT_1:14;
end;
