(* *)
(**************************************************************************)
-include "basic_2/notation/relations/notreducible_5.ma".
+include "basic_2/notation/relations/prednotreducible_5.ma".
include "basic_2/reduction/cir.ma".
include "basic_2/reduction/crx.ma".
-(* CONTEXT-SENSITIVE EXTENDED IRREDUCIBLE TERMS *****************************)
+(* IRREDUCIBLE TERMS FOR CONTEXT-SENSITIVE EXTENDED REDUCTION ***************)
definition cix: ∀h. sd h → relation3 genv lenv term ≝
λh,g,G,L,T. ⦃G, L⦄ ⊢ ➡[h, g] 𝐑⦃T⦄ → ⊥.
-interpretation "context-sensitive extended irreducibility (term)"
- 'NotReducible h g G L T = (cix h g G L T).
+interpretation "irreducibility for context-sensitive extended reduction (term)"
+ 'PRedNotReducible h g G L T = (cix h g G L T).
(* Basic inversion lemmas ***************************************************)
lemma cix_inv_sort: ∀h,g,G,L,k,l. deg h g k (l+1) → ⦃G, L⦄ ⊢ ➡[h, g] 𝐈⦃⋆k⦄ → ⊥.
/3 width=2 by crx_sort/ qed-.
-lemma cix_inv_delta: â\88\80h,g,I,G,L,K,V,i. â\87©[i] L ≡ K.ⓑ{I}V → ⦃G, L⦄ ⊢ ➡[h, g] 𝐈⦃#i⦄ → ⊥.
+lemma cix_inv_delta: â\88\80h,g,I,G,L,K,V,i. â¬\87[i] L ≡ K.ⓑ{I}V → ⦃G, L⦄ ⊢ ➡[h, g] 𝐈⦃#i⦄ → ⊥.
/3 width=4 by crx_delta/ qed-.
lemma cix_inv_ri2: ∀h,g,I,G,L,V,T. ri2 I → ⦃G, L⦄ ⊢ ➡[h, g] 𝐈⦃②{I}V.T⦄ → ⊥.