+++ /dev/null
-(*#* #stop file *)
-
-Require subst1_defs.
-Require pr0_defs.
-Require pr0_subst0.
-
- Section pr0_subst1_props. (***********************************************)
-
- Theorem pr0_delta1: (u1,u2:?) (pr0 u1 u2) -> (t1,t2:?) (pr0 t1 t2) ->
- (w:?) (subst1 (0) u2 t2 w) ->
- (pr0 (TTail (Bind Abbr) u1 t1) (TTail (Bind Abbr) u2 w)).
- Intros until 3; XElim H1; Clear w; XEAuto.
- Qed.
-
- Theorem pr0_subst1_back: (u2,t1,t2:?; i:?) (subst1 i u2 t1 t2) ->
- (u1:?) (pr0 u1 u2) ->
- (EX t | (subst1 i u1 t1 t) & (pr0 t t2)).
- Intros until 1; XElim H; Intros;
- Try Pr0Subst0; XEAuto.
- Qed.
-
- Theorem pr0_subst1_fwd: (u2,t1,t2:?; i:?) (subst1 i u2 t1 t2) ->
- (u1:?) (pr0 u2 u1) ->
- (EX t | (subst1 i u1 t1 t) & (pr0 t2 t)).
- Intros until 1; XElim H; Intros;
- Try Pr0Subst0; XEAuto.
- Qed.
-
- Theorem pr0_subst1: (t1,t2:?) (pr0 t1 t2) ->
- (v1,w1:?; i:?) (subst1 i v1 t1 w1) ->
- (v2:?) (pr0 v1 v2) ->
- (EX w2 | (pr0 w1 w2) & (subst1 i v2 t2 w2)).
- Intros until 2; XElim H0; Intros;
- Try Pr0Subst0; XEAuto.
- Qed.
-
- End pr0_subst1_props.
-
- Hints Resolve pr0_delta1 : ltlc.
-
- Tactic Definition Pr0Subst1 :=
- Match Context With
- | [ H1: (pr0 ?1 ?2); H2: (subst1 ?3 ?4 ?1 ?5);
- H3: (pr0 ?4 ?6) |- ? ] ->
- LApply (pr0_subst1 ?1 ?2); [ Clear H1; Intros H1 | XAuto ];
- LApply (H1 ?4 ?5 ?3); [ Clear H1 H2; Intros H1 | XAuto ];
- LApply (H1 ?6); [ Clear H1; Intros H1 | XAuto ];
- XElim H1; Intros
- | [ H1: (pr0 ?1 ?2); H2: (subst1 ?3 ?4 ?1 ?5) |- ? ] ->
- LApply (pr0_subst1 ?1 ?2); [ Clear H1; Intros H1 | XAuto ];
- LApply (H1 ?4 ?5 ?3); [ Clear H1 H2; Intros H1 | XAuto ];
- LApply (H1 ?4); [ Clear H1; Intros H1 | XAuto ];
- XElim H1; Intros
- | [ H1: (subst1 ?0 ?1 ?2 ?3); H2: (pr0 ?4 ?1) |- ? ] ->
- LApply (pr0_subst1_back ?1 ?2 ?3 ?0); [ Clear H1; Intros H1 | XAuto ];
- LApply (H1 ?4); [ Clear H1 H2; Intros H1 | XAuto ];
- XElim H1; Intros
- | [ H1: (subst1 ?0 ?1 ?2 ?3); H2: (pr0 ?1 ?4) |- ? ] ->
- LApply (pr0_subst1_fwd ?1 ?2 ?3 ?0); [ Clear H1; Intros H1 | XAuto ];
- LApply (H1 ?4); [ Clear H1 H2; Intros H1 | XAuto ];
- XElim H1; Intros
- | _ -> Pr0Subst0.
-