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Finish commutativity proof

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Yiyun Liu 2024-12-22 15:22:41 -05:00
parent fbe0bc4acc
commit 4599c1d65d
1 changed files with 14 additions and 3 deletions
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17
theories/fp_red.v
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@ -456,7 +456,16 @@ Proof.
(* By EPar morphing *)
* by apply EPar.substing.
+ move => a2 a3 b3 b4 c0 c1 h0 h1 h2 [*]. subst.
admit.
move /(_ _ ltac:(by eauto using RPar.PairCong)) : iha
=> [c [ihc0 ihc1]].
move /(_ _ ltac:(by eauto)) : ihb => [d [ihd0 ihd1]].
move /Pair_EPar : ihc1 => [_ [d0 [d1 [ih0 [ih1 ih2]]]]].
move /RPars.substing : ih0. move /(_ d).
asimpl => h.
exists (Pair (App d0 d) (App d1 d)).
split.
hauto lq:on use:relations.rtc_transitive, RPars.AppCong.
apply EPar.PairCong; by apply EPar.AppCong.
+ hauto lq:on ctrs:EPar.R use:RPars.AppCong.
- hauto lq:on ctrs:EPar.R inv:RPar.R use:RPars.PairCong.
- move => n p a b0 h0 ih0 b1.
@ -468,9 +477,11 @@ Proof.
qauto l:on ctrs:EPar.R use:RPars.ProjCong, @relations.rtc_transitive.
+ move => p0 a0 a1 b2 b3 h1 h2 [*]. subst.
move /(_ _ ltac:(by eauto using RPar.PairCong)) : ih0 => [c [ih0 ih1]].
admit.
move /Pair_EPar : ih1 => [/(_ p)[d [ihd ihd']] _].
exists d. split => //.
hauto lq:on use:RPars.ProjCong, relations.rtc_transitive.
+ hauto lq:on ctrs:EPar.R use:RPars.ProjCong.
Admitted.
Qed.
Lemma EPar_Par n (a b : Tm n) : EPar.R a b -> Par.R a b.
Proof. induction 1; hauto lq:on ctrs:Par.R. Qed.