]> matita.cs.unibo.it Git - helm.git/blobdiff - matita/matita/contribs/lambdadelta/static_2/syntax/term_weight.ma
update in ground_2, static_2, basic_2, apps_2, alpha_1
[helm.git] / matita / matita / contribs / lambdadelta / static_2 / syntax / term_weight.ma
index 6948a54a8fea6e935b259cb3296570a0bacbda9c..ee53e62e754e8b3f3210c401508dd832dd10cd3a 100644 (file)
@@ -27,11 +27,11 @@ interpretation "weight (term)" 'Weight T = (tw T).
 (* Basic properties *********************************************************)
 
 (* Basic_1: was: tweight_lt *)
-lemma tw_pos: ∀T. 1 ≤ ♯{T}.
+lemma tw_pos: ∀T. 1 ≤ ♯❨T❩.
 #T elim T -T //
 qed.
 
-lemma tw_le_pair_dx (I): ∀V,T. ♯{T} < ♯{②{I}V.T}.
+lemma tw_le_pair_dx (I): ∀V,T. ♯❨T❩ < ♯❨②[I]V.T❩.
 #I #V #T /2 width=1 by le_S_S/
 qed.