
theorem
  for n being Ordinal, T being connected TermOrder of n, L being non
  trivial ZeroStr, p being Polynomial of n,L holds HC(HM(p,T),T) = HC(p,T)
proof
  let n being Ordinal, O be connected TermOrder of n, L be non trivial ZeroStr
  , p being Polynomial of n,L;
  thus HC(HM(p,O),O) = (HM(p,O)).(HT(p,O)) by Th26
    .= HC(p,O) by Lm8;
end;
