 reserve R for domRing;
 reserve p for odd prime Nat, m for positive Nat;
 reserve g for non zero Polynomial of INT.Ring;
 reserve f for Element of the carrier of Polynom-Ring INT.Ring;

theorem Th16:
  for p be odd prime Nat, m be positive Nat holds
  len (x.(m,p)) = m &
  len ff_0(m,p) = m + 1 &
  (ff_0(m,p)).(len (x.(m,p)) + 1) = (tau(0))|^(p-'1)
   proof
     let p be odd prime Nat, m be positive Nat;
A1:  len <* (tau(0))|^(p-'1) *> = 1 by FINSEQ_1:40;
     len ff_0(m,p) = len (x.(m,p)) + len <* (tau(0))|^(p-'1) *> by FINSEQ_1:22
     .= m + 1 by Def2,A1;
     hence thesis by Def2;
   end;
