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(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the      *)
(* GNU General Public License for more details.                       *)
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(* 02110-1301 USA                                                     *)
Require Export Qhomographic_sign.

Lemma sg_tuple_equal :
forall (l1 a1 b1 c1 d1 : Z) (p1 : Qpositive) (l2 a2 b2 c2 d2 : Z)
(p2 : Qpositive),
(l1, (a1, (b1, (c1, d1)), p1)) = (l2, (a2, (b2, (c2, d2)), p2)) ->
l1 = l2 /\ (a1 = a2 /\ b1 = b2 /\ c1 = c2 /\ d1 = d2) /\ p1 = p2.