milestone uupdate in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_transition / cpm.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpm.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpm.ma
index 97cfd31a44e5096dc744e2f55fc528193c7bb303..341ecee8cfde5b23e00b615b04c4d3ef40673cc7 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpm.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpm.ma
@@ -290,22 +290,6 @@ lemma cpm_inv_cast1: ∀n,h,G,L,V1,U1,U2. ⦃G, L⦄ ⊢ ⓝV1.U1 ➡[n, h] U2 
 ]
 qed-.
 
-(* Advanced inversion lemmas ************************************************)
-
-lemma cpm_inv_appl_sn_decompose (h) (n) (G) (L) (V1) (T1):
-      ∀X2. ⦃G,L⦄ ⊢ ⓐV1.T1 ➡[n,h] X2 →
-      ∃∃T2. ⦃G,L⦄ ⊢ T1 ➡[n,h] T2 & ⦃G,L⦄ ⊢ ⓐV1.T2 ➡[h] X2.
-#h #n #G #L #V1 #T1 #X2 #H
-elim (cpm_inv_appl1 … H) -H *
-[ #V2 #T2 #HV12 #HT12 #H destruct
-  /3 width=3 by cpm_appl, ex2_intro/
-| #p #V2 #W1 #W2 #U1 #U2 #HV12 #HW12 #HU12 #H1 #H2 destruct
-  /3 width=5 by cpm_beta, cpm_bind, ex2_intro/
-| #p #V2 #V0 #W1 #W2 #U1 #U2 #HV12 #HV20 #HW12 #HU12 #H1 #H2 destruct
-  /3 width=5 by cpm_theta, cpm_bind, ex2_intro/
-]
-qed-.
-
 (* Basic forward lemmas *****************************************************)
 
 (* Basic_2A1: includes: cpr_fwd_bind1_minus *)