- we set up the support for the "bt-reduction" of Automath literature

[helm.git] / matita / matita / contribs / lambda_delta / basic_2 / dynamic / snv_aaa.ma

diff --git a/matita/matita/contribs/lambda_delta/basic_2/dynamic/snv_aaa.ma b/matita/matita/contribs/lambda_delta/basic_2/dynamic/snv_aaa.ma
index fdef6d003575861340faf317c8723ed05a592a5a..d7f9ec8110b94bea2bec4fb8361a288cd98f56b3 100644 (file)
--- a/matita/matita/contribs/lambda_delta/basic_2/dynamic/snv_aaa.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/dynamic/snv_aaa.ma
@@ -28,8 +28,7 @@ lemma snv_aaa: ∀h,g,L,T. ⦃h, L⦄ ⊩ T :[g] → ∃A. L ⊢ T ⁝ A.
 | #I #L #K #V #i #HLK #_ * /3 width=6/
 | #a * #L #V #T #_ #_ * #B #HV * #A #HA /3 width=2/
 | #a #L #V #W #W0 #T #U #l #_ #_ #HVW #HW0 #HTU * #B #HV * #X #HT
-  lapply (xprs_aaa h g … HV W0 ?)
-  [ /3 width=3 by xprs_strap2, ssta_xpr, cprs_xprs/ ] -W #HW0 (**) (* NTypeChecker failure without trace *)
+  lapply (xprs_aaa h g … HV W0 ?) [ /3 width=3/ ] -W #HW0
   lapply (xprs_aaa … HT … HTU) -HTU #H
   elim (aaa_inv_abst … H) -H #B0 #A #H1 #HU #H2 destruct
   lapply (aaa_mono … H1 … HW0) -W0 #H destruct /3 width=4/