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minor edits

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This commit is contained in:
Jeremy Siek 2019-05-09 08:40:32 +02:00
parent 5add203818
commit 89b647b09d
1 changed files with 7 additions and 7 deletions
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extra/extra/Substitution.lagda
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@ -8,7 +8,6 @@ module extra.Substitution where
open import plfa.Untyped
using (Type; Context; _⊢_; ★; _∋_; ∅; _,_; Z; S_; `_; ƛ_; _·_; rename; subst;
ext; exts; _[_]; subst-zero)
renaming (_∎ to _[])
open import plfa.Denotational using (Rename)
open import plfa.Soundness using (Subst)
@ -410,7 +409,8 @@ rename-subst-commute {Γ}{Δ}{N}{M}{ρ} =
subst (cons (subst (ren ρ) M)
(seq (seq (ren ρ) (ren S_)) (cons (subst (ren ρ) M) ids))) N
≡⟨ subst-equal{M = N} (λ{A}{x} → cons-congR{x = x}
(λ{x} → seq-assoc{σ = ren ρ}{τ = ren S_}{θ = (cons (subst (ren ρ) M) ids)}{x = x})) ⟩
(λ{x} → seq-assoc {σ = ren ρ} {τ = ren S_}
{θ = (cons (subst (ren ρ) M) ids)} {x = x})) ⟩
subst (cons (subst (ren ρ) M)
(seq (ren ρ) (seq (ren S_) (cons (subst (ren ρ) M) ids)))) N
≡⟨ (subst-equal{M = N}λ{A}{x} → cons-congR{x = x}