theorem add_S_1: \forall p,q,r. add p q r \to add (S p) q (S r).
intros 2. elim q; clear q;
- [ lapply add_gen_O_2 to H as H0. clear H.
+ [ lapply linear add_gen_O_2 to H as H0.
rewrite > H0. clear H0 p
- | lapply add_gen_S_2 to H1 as H0. clear H1.
+ | lapply linear add_gen_S_2 to H1 as H0.
decompose.
rewrite > H2. clear H2 r
]; auto.
theorem add_sym: \forall p,q,r. add p q r \to add q p r.
intros 2. elim q; clear q;
- [ lapply add_gen_O_2 to H as H0. clear H.
+ [ lapply linear add_gen_O_2 to H as H0.
rewrite > H0. clear H0 p
- | lapply add_gen_S_2 to H1 as H0. clear H1.
+ | lapply linear add_gen_S_2 to H1 as H0.
decompose.
rewrite > H2. clear H2 r
]; auto.
theorem add_shift_S_sx: \forall p,q,r. add p (S q) r \to add (S p) q r.
intros.
- lapply add_gen_S_2 to H as H0. clear H.
+ lapply linear add_gen_S_2 to H as H0.
decompose.
rewrite > H1. clear H1 r.
auto.
theorem add_shift_S_dx: \forall p,q,r. add (S p) q r \to add p (S q) r.
intros.
- lapply add_gen_S_1 to H as H0. clear H.
+ lapply linear add_gen_S_1 to H as H0.
decompose.
rewrite > H1. clear H1 r.
auto.
\forall q2,r2. add r1 q2 r2 \to
\exists q. add q1 q2 q \land add p q r2.
intros 2; elim q1; clear q1; intros;
- [ lapply add_gen_O_2 to H as H0. clear H.
+ [ lapply linear add_gen_O_2 to H as H0.
rewrite > H0. clear H0 p
- | lapply add_gen_S_2 to H1 as H0. clear H1.
+ | lapply linear add_gen_S_2 to H1 as H0.
decompose.
rewrite > H3. rewrite > H3 in H2. clear H3 r1.
- lapply add_gen_S_1 to H2 as H0. clear H2.
+ lapply linear add_gen_S_1 to H2 as H0.
decompose.
rewrite > H2. clear H2 r2.
- lapply H to H4, H3 as H0. clear H H4 H3.
+ lapply linear H to H4, H3 as H0.
decompose.
]; apply ex_intro; [| auto || auto ]. (**)
qed.
\forall p2,r2. add p2 r1 r2 \to
\exists p. add p1 p2 p \land add p q r2.
intros 2; elim q; clear q; intros;
- [ lapply add_gen_O_2 to H as H0. clear H.
+ [ lapply linear add_gen_O_2 to H as H0.
rewrite > H0. clear H0 p1
- | lapply add_gen_S_2 to H1 as H0. clear H1.
+ | lapply linear add_gen_S_2 to H1 as H0.
decompose.
rewrite > H3. rewrite > H3 in H2. clear H3 r1.
- lapply add_gen_S_2 to H2 as H0. clear H2.
+ lapply linear add_gen_S_2 to H2 as H0.
decompose.
rewrite > H2. clear H2 r2.
- lapply H to H4, H3 as H0. clear H H4 H3.
+ lapply linear H to H4, H3 as H0.
decompose.
]; apply ex_intro; [| auto || auto ]. (**)
qed.
theorem add_conf: \forall p,q,r1. add p q r1 \to
\forall r2. add p q r2 \to r1 = r2.
intros 2. elim q; clear q; intros;
- [ lapply add_gen_O_2 to H as H0. clear H.
+ [ lapply linear add_gen_O_2 to H as H0.
rewrite > H0 in H1. clear H0 p
- | lapply add_gen_S_2 to H1 as H0. clear H1.
+ | lapply linear add_gen_S_2 to H1 as H0.
decompose.
rewrite > H3. clear H3 r1.
- lapply add_gen_S_2 to H2 as H0. clear H2.
+ lapply linear add_gen_S_2 to H2 as H0.
decompose.
rewrite > H2. clear H2 r2.
]; auto.