
theorem Th11:
  for S being Circuit-like non void non empty ManySortedSign for
  A being non-empty Circuit of S, s being State of A holds Following(s,0) = s
proof
  let S be Circuit-like non void non empty ManySortedSign;
  let A be non-empty Circuit of S, s be State of A;
  ex f being sequence of  product the Sorts of A st Following(s,0) = f
  .0 & f.0 = s & for n being Nat holds f.(n+1) = Following f.n by Def7;
  hence thesis;
end;
