Definition divTerm :
  Term A n ->
  forall (b : Term A n) (nZb : ~ zeroP (A:=A) A0 eqA (n:=n) b), Term A n.

Theorem div_is_T1 : forall (a : Term A n) (nZa : ~ zeroP (A:=A) A0 eqA (n:=n) a), eqTerm (A:=A) eqA (n:=n) (divTerm a nZa) (T1 A1 n).