Created
May 9, 2016 11:36
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open import Data.List | |
mutual | |
data Typ : Set₁ where | |
ground : Set → Typ | |
tyw : Typ → Subst → Typ | |
data Subst : Set where | |
id : Subst | |
↑ : Subst | |
_∙_ : Term → Subst → Subst | |
_∘_ : Subst → Subst → Subst | |
data Term : Set where | |
one : Term | |
trw : Term → Subst → Term | |
Ctx : Set₁ | |
Ctx = List Typ | |
mutual | |
data jctx : Ctx → Set₁ where | |
ctempty : jctx [] | |
ctcons : ∀{Γ σ} → jtype Γ σ → jctx (σ ∷ Γ) | |
data jtype : Ctx → Typ → Set₁ where | |
tysubst : ∀{Γ Γ' s σ} → jsubst Γ' s Γ → jtype Γ σ → jtype Γ' (tyw σ s) | |
data jsubst : Ctx → Subst → Ctx → Set₁ where | |
sbid : ∀{Γ} → jsubst Γ id Γ | |
sbshift : ∀{Γ σ} → jsubst (σ ∷ Γ) ↑ Γ | |
sbcomp : ∀{Γ₁ Γ₂ Γ₃ s₁ s₂} → jsubst Γ₁ s₁ Γ₂ → jsubst Γ₂ s₂ Γ₃ → jsubst Γ₁ (s₂ ∘ s₁) Γ₃ | |
sbapp : ∀{Γ Γ' s σ M'} → jsubst Γ' s Γ → jtype Γ σ → jterm Γ' M' (tyw σ s) → jsubst Γ' (M' ∙ s) (σ ∷ Γ) | |
data jterm : Ctx → Term → Typ → Set₁ where | |
trone : ∀{Γ σ} → jterm (σ ∷ Γ) one (tyw σ ↑) | |
trsubst : ∀{Γ Γ' σ s M} → jsubst Γ' s Γ → jterm Γ M σ → jterm Γ' (trw M s) (tyw σ s) | |
_⊢_/_ = jterm | |
data eqTyp : Typ → Typ → Set₁ where | |
etycomp : ∀{σ s t} → eqTyp (tyw (tyw σ s) t) (tyw σ (s ∘ t)) | |
etyid : ∀{σ} → eqTyp (tyw σ id) σ | |
data eqSubst : Subst → Subst → Set₁ where | |
esbshift : ∀{M s} → eqSubst (↑ ∘ (M ∙ s)) s | |
esbassoc : ∀{s₁ s₂ s₃} → eqSubst ((s₁ ∘ s₂) ∘ s₃) (s₁ ∘ (s₂ ∘ s₃)) | |
esbidl : ∀{s} → eqSubst (id ∘ s) s | |
esbidr : ∀{s} → eqSubst (s ∘ id) s | |
esbapp : ∀{M s t} → eqSubst ((M ∙ s) ∘ t) ((trw M t) ∙ (s ∘ t)) | |
esbone : ∀{s} → eqSubst ((trw one s) ∙ (↑ ∘ s)) s | |
data eqTerm : Term → Term → Set₁ where | |
etrone : ∀{M s} → eqTerm (trw one (M ∙ s)) M | |
etrcomp : ∀{M s t} → eqTerm (trw (trw M s) t) (trw M (s ∘ t)) |
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