- advances on lfxs for lfpxs

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc / cpxs / cpxs.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2/etc/cpxs/cpxs.etc b/matita/matita/contribs/lambdadelta/basic_2/etc/cpxs/cpxs.etc
index 89e1466f7ae7dec0b78d728a50e2c2b0cc910df2..ada873d816ad1e18da99ed75d40c21108da0808a 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/etc/cpxs/cpxs.etc
+++ b/matita/matita/contribs/lambdadelta/basic_2/etc/cpxs/cpxs.etc
@@ -7,8 +7,7 @@ lemma cprs_cpxs: ∀h,o,G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ⬈* T2 → ⦃G, L⦄ ⊢
 cpr_cpx/
 qed.
 
-lemma cpxs_inv_cnx1: ∀h,o,G,L,T,U. ⦃G, L⦄ ⊢ T ⬈*[h] U → ⦃G, L⦄ ⊢ ⬈[h]
-𝐍⦃T⦄ → T = U.
+lemma cpxs_inv_cnx1: ∀h,o,G,L,T,U. ⦃G, L⦄ ⊢ T ⬈*[h] U → ⦃G, L⦄ ⊢ ⬈[h] 𝐍⦃T⦄ → T = U.
 #h #o #G #L #T #U #H @(cpxs_ind_dx … H) -T //
 #T0 #T #H1T0 #_ #IHT #H2T0
 lapply (H2T0 … H1T0) -H1T0 #H destruct /2 width=1 by/