X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcnr_simple.ma;h=bd1e11c003bccb3175c6d0f082dc3d988d42867c;hp=71c9223b26c191f9f007fff928b42eacb62db8cb;hb=ca7327c20c6031829fade8bb84a3a1bb66113f54;hpb=25c634037771dff0138e5e8e3d4378183ff49b86 diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnr_simple.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnr_simple.ma index 71c9223b2..bd1e11c00 100644 --- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnr_simple.ma +++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnr_simple.ma @@ -20,7 +20,8 @@ include "basic_2/rt_transition/cnr.ma". (* Inversion lemmas with simple terms ***************************************) lemma cnr_inv_appl (h) (G) (L): - ∀V,T. ❪G,L❫ ⊢ ➡[h] 𝐍❪ⓐV.T❫ → ∧∧ ❪G,L❫ ⊢ ➡[h] 𝐍❪V❫ & ❪G,L❫ ⊢ ➡[h] 𝐍❪T❫ & 𝐒❪T❫. + ∀V,T. ❪G,L❫ ⊢ ➡𝐍[h,0] ⓐV.T → + ∧∧ ❪G,L❫ ⊢ ➡𝐍[h,0] V & ❪G,L❫ ⊢ ➡𝐍[h,0] T & 𝐒❪T❫. #h #G #L #V1 #T1 #HVT1 @and3_intro [ #V2 #HV2 lapply (HVT1 (ⓐV2.T1) ?) -HVT1 /2 width=1 by cpr_pair_sn/ -HV2 #H destruct // | #T2 #HT2 lapply (HVT1 (ⓐV1.T2) ?) -HVT1 /2 width=1 by cpr_flat/ -HT2 #H destruct // @@ -36,7 +37,7 @@ qed-. (* Basic_1: was only: nf2_appl_lref *) lemma cnr_appl_simple (h) (G) (L): - ∀V,T. ❪G,L❫ ⊢ ➡[h] 𝐍❪V❫ → ❪G,L❫ ⊢ ➡[h] 𝐍❪T❫ → 𝐒❪T❫ → ❪G,L❫ ⊢ ➡[h] 𝐍❪ⓐV.T❫. + ∀V,T. ❪G,L❫ ⊢ ➡𝐍[h,0] V → ❪G,L❫ ⊢ ➡𝐍[h,0] T → 𝐒❪T❫ → ❪G,L❫ ⊢ ➡𝐍[h,0] ⓐV.T. #h #G #L #V #T #HV #HT #HS #X #H elim (cpm_inv_appl1_simple … H) -H // #V0 #T0 #HV0 #HT0 #H destruct <(HV … HV0) -V0 <(HT … HT0) -T0 //