X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_computation%2Ffqus_weight.ma;h=72c46008f1e9f68dabe5418e37b5eb36c64bd103;hp=02be24fc73a90535cdb1b893dd51e747fd512a14;hb=a454837a256907d2f83d42ced7be847e10361ea9;hpb=b4283c079ed7069016b8d924bbc7e08872440829

diff --git a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqus_weight.ma b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqus_weight.ma
index 02be24fc7..72c46008f 100644
--- a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqus_weight.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqus_weight.ma
@@ -19,7 +19,7 @@ include "static_2/s_computation/fqus.ma".
 
 (* Forward lemmas with weight for closures **********************************)
 
-lemma fqus_fwd_fw: ∀b,G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ⊐*[b] ⦃G2,L2,T2⦄ →
+lemma fqus_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 @(fqus_ind … H) -L2 -T2
 /3 width=3 by fquq_fwd_fw, transitive_le/
@@ -27,7 +27,7 @@ qed-.
 
 (* Advanced inversion lemmas ************************************************)
 
-lemma fqus_inv_refl_atom3: ∀b,I,G,L,X. ⦃G,L,⓪{I}⦄ ⊐*[b] ⦃G,L,X⦄ → ⓪{I} = X.
+lemma fqus_inv_refl_atom3: ∀b,I,G,L,X. ⦃G,L,⓪{I}⦄ ⬂*[b] ⦃G,L,X⦄ → ⓪{I} = X.
 #b #I #G #L #X #H elim (fqus_inv_fqu_sn … H) -H * //
 #G0 #L0 #T0 #H1 #H2 lapply (fqu_fwd_fw … H1) lapply (fqus_fwd_fw … H2) -H2 -H1
 #H2 #H1 lapply (le_to_lt_to_lt … H2 H1) -G0 -L0 -T0