X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fsnv_ssta.ma;h=ea04940d88d5b7fb6923c2800584a51dbca876b1;hb=fba384e357ed3c8781fc018c2c16f2b40df144af;hp=d96994e6cf0a6198f83d3c2487aa1e3ab5ce4bf2;hpb=38c81062ae1aedf89d426d5dcd9a27824c4b0fb0;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/snv_ssta.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/snv_ssta.ma
index d96994e6c..ea04940d8 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/snv_ssta.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/snv_ssta.ma
@@ -34,7 +34,7 @@ qed-.
 fact snv_ssta_conf_aux: ∀h,g,L,T. (
                            ∀L0,T0. ⦃h, L0⦄ ⊩ T0 :[g] →
                            ∀U0,l. ⦃h, L0⦄ ⊢ T0 •[g, l + 1] U0 →
-                           #{L0, T0} < #{L, T} → ⦃h, L0⦄ ⊩ U0 :[g]
+                           ♯{L0, T0} < ♯{L, T} → ⦃h, L0⦄ ⊩ U0 :[g]
                         ) →
                         ∀L0,T0. ⦃h, L0⦄ ⊩ T0 :[g] →
                         ∀U0,l. ⦃h, L0⦄ ⊢ T0 •[g, l + 1] U0 →