update in basic_2 ...

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / grammar / cl_weight.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/grammar/cl_weight.ma b/matita/matita/contribs/lambdadelta/basic_2/grammar/cl_weight.ma
index d7c923dd494274a4e539b21477579c2df841083d..bd837d4df9146f3d9b801426e0d0d00705f5d8b2 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/grammar/cl_weight.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/grammar/cl_weight.ma
@@ -26,8 +26,8 @@ interpretation "weight (closure)" 'Weight G L T = (fw G L T).
 (* Basic properties *********************************************************)
 
 (* Basic_1: was: flt_shift *)
-lemma fw_shift: ∀a,I,G,K,V,T. ♯{G, K.ⓑ{I}V, T} < ♯{G, K, ⓑ{a,I}V.T}.
-normalize //
+lemma fw_shift: ∀p,I,G,K,V,T. ♯{G, K.ⓑ{I}V, T} < ♯{G, K, ⓑ{p,I}V.T}.
+normalize /2 width=1 by monotonic_le_plus_r/
 qed.
 
 lemma fw_tpair_sn: ∀I,G,L,V,T. ♯{G, L, V} < ♯{G, L, ②{I}V.T}.