- first results on cpx (dericed from those on cpg)

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc_new / cpx / cpx_length.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2/etc_new/cpx/cpx_length.etc b/matita/matita/contribs/lambdadelta/basic_2/etc_new/cpx/cpx_length.etc
new file mode 100644 (file)
index 0000000..c769990
--- /dev/null
+++ b/matita/matita/contribs/lambdadelta/basic_2/etc_new/cpx/cpx_length.etc
@@ -0,0 +1 @@
+lemma cpx_inv_lref1_ge: ∀h,G,L,T2,i. ⦃G, L⦄ ⊢ #i ➡[h] T2 → |L| ≤ i → T2 = #i.