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diff --git a/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_weight.ma b/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_weight.ma
deleted file mode 100644
index faddd7dc6..000000000
--- a/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_weight.ma
+++ /dev/null
@@ -1,26 +0,0 @@
-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||M||                                                             *)
-(*      ||A||       A project by Andrea Asperti                           *)
-(*      ||T||                                                             *)
-(*      ||I||       Developers:                                           *)
-(*      ||T||         The HELM team.                                      *)
-(*      ||A||         http://helm.cs.unibo.it                             *)
-(*      \   /                                                             *)
-(*       \ /        This file is distributed under the terms of the       *)
-(*        v         GNU General Public License Version 2                  *)
-(*                                                                        *)
-(**************************************************************************)
-
-include "basic_2/s_transition/fqu_weight.ma".
-include "basic_2/s_transition/fquq.ma".
-
-(* OPTIONAL SUPCLOSURE ******************************************************)
-
-(* Forward lemmas with weight for closures **********************************)
-
-lemma fquq_fwd_fw: ∀b,G1,G2,L1,L2,T1,T2. ⦃G1, L1, T1⦄ ⊐⸮[b] ⦃G2, L2, T2⦄ →
-                   ♯{G2, L2, T2} ≤ ♯{G1, L1, T1}.
-#b #G1 #G2 #L1 #L2 #T1 #T2 #H elim H -H [2: * ]
-/3 width=2 by fqu_fwd_fw, lt_to_le/
-qed-.