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i1 ∘ise i2 = snd ((_ , i1) ∘e (_ , i2))
function
i1
core.lib
core/lib/Equivalence.agda
[ "lib.Base", "lib.NType", "lib.PathFunctor", "lib.PathGroupoid", "lib.Function" ]
[ "snd" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
(_ , ise) ⁻¹ = (is-equiv.g ise , is-equiv-inverse ise) {- Equational reasoning for equivalences -}
function
_
core.lib
core/lib/Equivalence.agda
[ "lib.Base", "lib.NType", "lib.PathFunctor", "lib.PathGroupoid", "lib.Function" ]
[ "is-equiv-inverse" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
X ⊙≃ Y = Σ (X ⊙→ Y) (λ {(f , _) → is-equiv f})
X ⊙≃⟨ u ⟩ v = v ⊙∘e u
function
X
core.lib
core/lib/Equivalence.agda
[ "lib.Base", "lib.NType", "lib.PathFunctor", "lib.PathGroupoid", "lib.Function" ]
[ "is-equiv" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
(g , g-eq) ⊙∘e (f , f-eq) = (g ⊙∘ f , g-eq ∘ise f-eq)
function
g
core.lib
core/lib/Equivalence.agda
[ "lib.Base", "lib.NType", "lib.PathFunctor", "lib.PathGroupoid", "lib.Function" ]
[]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-contr-map : ∀ {i j} {A : Type i} {B : Type j} (f : A → B) → Type (lmax i j)
is-contr-map {A = A} {B = B} f = (y : B) → is-contr (hfiber f y)
function
is-contr-map
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "hfiber", "is-contr" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
equiv-is-contr-map : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} → (is-equiv f → is-contr-map f)
equiv-is-contr-map e y = equiv-preserves-level (Σ-emap-l (_== y) (_ , e) ⁻¹)
function
equiv-is-contr-map
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "is-contr-map", "is-equiv", "Σ-emap-l" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
contr-map-is-equiv : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} → (is-contr-map f → is-equiv f)
contr-map-is-equiv {f = f} cm = is-eq _ (λ b → fst (contr-center (cm b))) (λ b → snd (contr-center (cm b))) (λ a → ap fst (contr-path (cm (f a)) (a , idp)))
function
contr-map-is-equiv
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "ap", "fst", "idp", "is-contr-map", "is-equiv", "snd" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
equiv-rcoh-is-contr : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} (e : is-equiv f) → (v : rinv f) → is-contr (rcoh f v)
equiv-rcoh-is-contr {f = f} e v = equiv-preserves-level ((rcoh-econv v)⁻¹) {{Π-level (λ x → =-preserves-level (equiv-is-contr-map e (f x)))}}
function
equiv-rcoh-is-contr
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "equiv-is-contr-map", "is-contr", "is-equiv" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
rinv-and-rcoh-is-equiv : ∀ {i j} {A : Type i} {B : Type j} {h : A → B} → Σ (rinv h) (rcoh h) ≃ is-equiv h
rinv-and-rcoh-is-equiv {h = h} = equiv f g (λ _ → idp) (λ _ → idp) where f : Σ (rinv h) (rcoh h) → is-equiv h f s = record {g = fst (fst s); f-g = snd (fst s); g-f = fst (snd s); adj = snd (snd s)} g : is-equiv h → Σ (rinv h) (rcoh h) g t = ((is-equiv.g t , is-equiv.f-g t...
function
rinv-and-rcoh-is-equiv
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "fst", "idp", "is-equiv", "snd" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-equiv-is-prop : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} → is-prop (is-equiv f)
is-equiv-is-prop = inhab-to-contr-is-prop λ e → equiv-preserves-level rinv-and-rcoh-is-equiv {{Σ-level (equiv-rinv-is-contr e) (equiv-rcoh-is-contr e)}}
function
is-equiv-is-prop
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "equiv-rcoh-is-contr", "is-equiv", "is-prop", "rinv-and-rcoh-is-equiv", "Σ-level" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-equiv-level : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} {n : ℕ₋₂} → has-level (S n) (is-equiv f)
is-equiv-level = prop-has-level-S is-equiv-is-prop
function
is-equiv-level
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "is-equiv", "is-equiv-is-prop", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-equiv-prop : ∀ {i j} {A : Type i} {B : Type j} → SubtypeProp (A → B) (lmax i j)
is-equiv-prop = is-equiv , λ f → is-equiv-is-prop
function
is-equiv-prop
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "is-equiv", "is-equiv-is-prop" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
∘e-unit-r : ∀ {i} {A B : Type i} (e : A ≃ B) → (e ∘e ide A) == e
∘e-unit-r e = pair= idp (prop-has-all-paths _ _)
function
∘e-unit-r
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "ide", "idp", "pair=" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ua-∘e : ∀ {i} {A B : Type i} (e₁ : A ≃ B) {C : Type i} (e₂ : B ≃ C) → ua (e₂ ∘e e₁) == ua e₁ ∙ ua e₂
ua-∘e = equiv-induction (λ {A} {B} e₁ → ∀ {C} → ∀ (e₂ : B ≃ C) → ua (e₂ ∘e e₁) == ua e₁ ∙ ua e₂) (λ A → λ e₂ → ap ua (∘e-unit-r e₂) ∙ ap (λ w → (w ∙ ua e₂)) (! (ua-η idp))) {- Adjointion where hom = path -}
function
ua-∘e
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "ap", "equiv-induction", "idp", "ua", "ua-η", "∘e-unit-r" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
Σ₂-Empty : ∀ {i} {A : Type i} → Σ A (λ _ → Empty) ≃ Empty
Σ₂-Empty = equiv (⊥-rec ∘ snd) ⊥-rec ⊥-elim (⊥-rec ∘ snd) {- Fiberwise equivalence -}
function
Σ₂-Empty
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Empty", "Type", "snd", "⊥-elim", "⊥-rec" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
replace-inverse : ∀ {i j} {A : Type i} {B : Type j} {f : A → B} (f-ise : is-equiv f) {g₁ : B → A} → is-equiv.g f-ise ∼ g₁ → is-equiv f
replace-inverse {f = f} f-ise {g₁ = g₁} g∼ = is-eq f g₁ (λ b → ap f (! (g∼ b)) ∙ f-g b) (λ a → ! (g∼ (f a)) ∙ g-f a) where open is-equiv f-ise
function
replace-inverse
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "ap", "is-equiv" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
fiber=-econv : ∀ {i j} {A : Type i} {B : Type j} {h : A → B} {y : B} (r s : Σ A (λ x → h x == y)) → (r == s) ≃ Σ (fst r == fst s) (λ γ → ap h γ ∙ snd s == snd r)
fiber=-econv r s = Σ-emap-r (λ γ → !-equiv ∘e (↓-app=cst-econv ⁻¹)) ∘e ((=Σ-econv r s)⁻¹)
function
fiber=-econv
core.lib
core/lib/Equivalence2.agda
[ "lib.Basics", "lib.types.Sigma", "lib.types.Pi", "lib.types.Paths", "lib.types.Unit", "lib.types.Empty" ]
[ "Type", "ap", "fst", "snd", "Σ-emap-r" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
CommSquare {i₀ i₁ j₀ j₁} {A₀ : Type i₀} {A₁ : Type i₁} {B₀ : Type j₀} {B₁ : Type j₁} (f₀ : A₀ → B₀) (f₁ : A₁ → B₁) (hA : A₀ → A₁) (hB : B₀ → B₁) : Type (lmax (lmax i₀ i₁) (lmax j₀ j₁)) where constructor comm-sqr field commutes : hB ∘ f₀ ∼ f₁ ∘ hA
record
CommSquare
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
⊙CommSquare {i₀ i₁ j₀ j₁} {X₀ : Ptd i₀} {X₁ : Ptd i₁} {Y₀ : Ptd j₀} {Y₁ : Ptd j₁} (f₀ : X₀ ⊙→ Y₀) (f₁ : X₁ ⊙→ Y₁) (hX : X₀ ⊙→ X₁) (hY : Y₀ ⊙→ Y₁) : Type (lmax (lmax i₀ i₁) (lmax j₀ j₁)) where constructor ⊙comm-sqr field ⊙commutes : hY ⊙∘ f₀ ⊙∼ f₁ ⊙∘ hX
record
⊙CommSquare
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Ptd", "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
⊙∘-pt : ∀ {i j} {A : Type i} {B : Type j} {a₁ a₂ : A} (f : A → B) {b : B} → a₁ == a₂ → f a₂ == b → f a₁ == b
⊙∘-pt f p q = ap f p ∙ q
function
⊙∘-pt
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "a₁" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_∼_ : ∀ {i j} {A : Type i} {B : A → Type j} (f g : (a : A) → B a) → Type (lmax i j)
function
_∼_
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_⊙∼_ : ∀ {i j} {X : Ptd i} {Y : Ptd j} (f g : X ⊙→ Y) → Type (lmax i j)
_⊙∼_ {X = X} {Y = Y} (f , f-pt) (g , g-pt) = Σ (f ∼ g) λ p → f-pt == g-pt [ (_== pt Y) ↓ p (pt X) ] {- infixr 80 _⊙∼-∙_ _⊙∼-∙_ : ∀ {i j} {X : Ptd i} {Y : Ptd j} {f g h : X ⊙→ Y} → f ⊙∼ g → g ⊙∼ h → f ⊙∼ h _⊙∼-∙_ f∼g g∼h = fst f∼g ∼-∙ fst g∼h , snd f∼g ∙ᵈ snd g∼h ⊙∼-! : ∀ {i j} {X : Ptd i} {Y : Ptd j} {f g : X ⊙→...
function
_⊙∼_
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Ptd", "Type", "pt" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_⊙∘_ : ∀ {i j k} {X : Ptd i} {Y : Ptd j} {Z : Ptd k} (g : Y ⊙→ Z) (f : X ⊙→ Y) → X ⊙→ Z
function
_⊙∘_
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Ptd" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
⊙∘-unit-l : ∀ {i j} {X : Ptd i} {Y : Ptd j} (f : X ⊙→ Y) → ⊙idf Y ⊙∘ f ⊙∼ f
⊙∘-unit-l (f , idp) = (λ _ → idp) , idp
function
⊙∘-unit-l
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Ptd", "idp", "⊙idf" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
⊙∘-unit-r : ∀ {i j} {X : Ptd i} {Y : Ptd j} (f : X ⊙→ Y) → f ⊙∘ ⊙idf X ⊙∼ f
⊙∘-unit-r f = (λ _ → idp) , idp {- Homotopy fibers -}
function
⊙∘-unit-r
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Ptd", "idp", "⊙idf" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
f ∼ g = ∀ x → f x == g x {- infixr 80 _∼-∙_ _∼-∙_ : ∀ {i j} {A : Type i} {B : Type j} {f g h : A → B} → f ∼ g → g ∼ h → f ∼ h _∼-∙_ f∼g g∼h x = f∼g x ∙ g∼h x ∼-! : ∀ {i j} {A : Type i} {B : Type j} {f g : A → B} → f ∼ g → g ∼ f ∼-! f∼g = ! ∘ f∼g -}
function
f
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
(g , gpt) ⊙∘ (f , fpt) = (g ∘ f) , ⊙∘-pt g fpt gpt
function
g
core.lib
core/lib/Function.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "⊙∘-pt" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-surj : ∀ {i j} {A : Type i} {B : Type j} (f : A → B) → Type (lmax i j)
is-surj {A = A} f = ∀ b → Trunc -1 (hfiber f b)
function
is-surj
core.lib
core/lib/Function2.agda
[ "lib.Basics", "lib.types.Truncation" ]
[ "Type", "hfiber" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-connected : ∀ {i} → ℕ₋₂ → Type i → Type i
is-connected n A = is-contr (Trunc n A)
function
is-connected
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-contr", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
has-conn-fibers : ∀ {i j} {A : Type i} {B : Type j} → ℕ₋₂ → (A → B) → Type (lmax i j)
has-conn-fibers {A = A} {B = B} n f = Π B (λ b → is-connected n (hfiber f b)) {- all types are -2-connected -}
function
has-conn-fibers
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "hfiber", "is-connected", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
-2-conn : ∀ {i} (A : Type i) → is-connected -2 A
-2-conn A = Trunc-level {- all inhabited types are -1-connected -}
function
-2-conn
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-connected" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
inhab-conn : ∀ {i} {A : Type i} (a : A) → is-connected -1 A
inhab-conn a = has-level-in ([ a ] , prop-has-all-paths [ a ]) {- connectedness is a prop -}
function
inhab-conn
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-connected" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-connected-is-prop : ∀ {i} {n : ℕ₋₂} {A : Type i} → is-prop (is-connected n A)
is-connected-is-prop = is-contr-is-prop {- "induction principle" for n-connected maps (where codomain is n-type) -}
function
is-connected-is-prop
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-connected", "is-prop", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
conn-extend-general : ∀ {i j} {A : Type i} {B : Type j} {n k : ℕ₋₂} → {f : A → B} → has-conn-fibers n f → ∀ {l} (P : B → (k +2+ n) -Type l) → ∀ t → has-level k (Σ (Π B (fst ∘ P)) (λ s → (s ∘ f) == t))
conn-extend-general {k = ⟨-2⟩} c P t = equiv-is-contr-map (pre∘-conn-is-equiv c P) t conn-extend-general {B = B} {n = n} {k = S k'} {f = f} c P t = has-level-in λ {(g , p) (h , q) → equiv-preserves-level (e g h p q) {{conn-extend-general {k = k'} c (Q g h) (app= (p ∙ ! q))}} } where Q : (g h : Π B (...
function
conn-extend-general
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "ap", "equiv-is-contr-map", "fst", "has-conn-fibers", "idp", "lemma", "snd", "transport", "Σ-emap-l", "Σ-emap-r", "ℕ₋₂", "⟨-2⟩" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
conn-in : ∀ {i j} {A : Type i} {B : Type j} {n : ℕ₋₂} {h : A → B} → (∀ (P : B → n -Type (lmax i j)) → Σ (Π A (fst ∘ P ∘ h) → Π B (fst ∘ P)) (λ u → ∀ (t : Π A (fst ∘ P ∘ h)) → u t ∘ h ∼ t)) → has-conn-fibers n h
conn-in {A = A} {B = B} {h = h} sec b = let s = sec (λ b → (Trunc _ (hfiber h b) , Trunc-level)) in has-level-in (fst s (λ a → [ a , idp ]) b , Trunc-elim (λ k → transport (λ v → fst s (λ a → [ a , idp ]) (fst v) == [ fst k , snd v ]) (contr-path (pathfrom-is-contr (h (fs...
function
conn-in
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "fst", "has-conn-fibers", "hfiber", "idp", "snd", "transport", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
pointed-conn-in : ∀ {i} {n : ℕ₋₂} (A : Type i) (a₀ : A) → has-conn-fibers {A = ⊤} n (cst a₀) → is-connected (S n) A
pointed-conn-in {n = n} A a₀ c = has-level-in ([ a₀ ] , Trunc-elim (λ a → Trunc-rec (λ x → ap [_] (snd x)) (contr-center $ c a)))
function
pointed-conn-in
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "[_]", "ap", "cst", "has-conn-fibers", "is-connected", "snd", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
pointed-conn-out : ∀ {i} {n : ℕ₋₂} (A : Type i) (a₀ : A) {{_ : is-connected (S n) A}} → has-conn-fibers {A = ⊤} n (cst a₀)
pointed-conn-out {n = n} A a₀ {{c}} a = has-level-in (point , λ y → ! (cancel point) ∙ (ap out $ contr-has-all-paths (into point) (into y)) ∙ cancel y) where into-aux : Trunc n (Σ ⊤ (λ _ → a₀ == a)) → Trunc n (a₀ == a) into-aux = Trunc-fmap snd into : Trunc n (Σ ⊤ (...
function
pointed-conn-out
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Trunc-fmap", "Trunc-fmap-∘", "Type", "[_]", "ap", "cancel", "cst", "has-conn-fibers", "idp", "into", "is-connected", "out", "snd", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
prop-over-connected : ∀ {i j} {A : Type i} {a : A} {{p : is-connected 0 A}} → (P : A → hProp j) → fst (P a) → Π A (fst ∘ P)
prop-over-connected P x = conn-extend (pointed-conn-out _ _) P (λ _ → x) {- Connectedness of a truncated type -}
function
prop-over-connected
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "fst", "hProp", "is-connected", "pointed-conn-out" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
connected-at-level-is-contr : ∀ {i} {A : Type i} {n : ℕ₋₂} {{pA : has-level n A}} {{cA : is-connected n A}} → is-contr A
connected-at-level-is-contr {{pA}} {{cA}} = equiv-preserves-level (unTrunc-equiv _) {{cA}} {- if A is n-connected and m ≤ n, then A is m-connected -}
function
connected-at-level-is-contr
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-connected", "is-contr", "unTrunc-equiv", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
connected-≤T : ∀ {i} {m n : ℕ₋₂} {A : Type i} → m ≤T n → {{_ : is-connected n A}} → is-connected m A
connected-≤T {m = m} {n = n} {A = A} leq = transport is-contr (ua (Trunc-fuse-≤ A leq)) (Trunc-preserves-level m ⟨⟩) {- Equivalent types have the same connectedness -}
function
connected-≤T
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Trunc-fuse-≤", "Trunc-preserves-level", "Type", "is-connected", "is-contr", "transport", "ua", "ℕ₋₂", "⟨⟩" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
equiv-preserves-conn : ∀ {i j} {A : Type i} {B : Type j} {n : ℕ₋₂} (e : A ≃ B) {{_ : is-connected n A}} → is-connected n B
equiv-preserves-conn {n = n} e = equiv-preserves-level (Trunc-emap e)
function
equiv-preserves-conn
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "is-connected", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
trunc-proj-conn : ∀ {i} (A : Type i) (n : ℕ₋₂) → has-conn-fibers n ([_] {n = n} {A = A})
trunc-proj-conn A n = conn-in $ λ P → Trunc-elim {P = fst ∘ P} {{snd ∘ P}} , λ t a → idp {- Composite of two connected functions is connected -}
function
trunc-proj-conn
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "[_]", "conn-in", "fst", "has-conn-fibers", "idp", "snd", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
∘-conn : ∀ {i j k} {A : Type i} {B : Type j} {C : Type k} → {n : ℕ₋₂} → (f : A → B) → (g : B → C) → has-conn-fibers n f → has-conn-fibers n g → has-conn-fibers n (g ∘ f)
∘-conn {n = n} f g cf cg = conn-in (λ P → conn-extend cg P ∘ conn-extend cf (P ∘ g) , lemma P) where lemma : ∀ P h x → conn-extend cg P (conn-extend cf (P ∘ g) h) (g (f x)) == h x lemma P h x = conn-extend cg P (conn-extend cf (P ∘ g) h) (g (f x)) =⟨ conn-extend-β cg P (conn-extend c...
function
∘-conn
core.lib
core/lib/NConnected.agda
[ "lib.Basics", "lib.NType2", "lib.Equivalence2", "lib.path-seq.Rotations", "lib.types.Unit", "lib.types.Nat", "lib.types.Pi", "lib.types.Pointed", "lib.types.Sigma", "lib.types.Paths", "lib.types.TLevel", "lib.types.Truncation" ]
[ "Type", "conn-in", "has-conn-fibers", "lemma", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
is-gpd : {i : ULevel} → Type i → Type i
is-gpd = has-level 1 -- Type of all n-truncated types -- TODO: redefine it like that, so that instance arguments can work -- record _-Type_ (n : ℕ₋₂) (i : ULevel) : Type (lsucc i) where -- constructor _,_ -- field -- El : Type i -- {{El-level}} : has-level n El -- open _-Type_ public
function
is-gpd
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
has-level-prop : ∀ {i} → ℕ₋₂ → SubtypeProp (Type i) i
has-level-prop n = has-level n , λ _ → has-level-is-prop
function
has-level-prop
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_-Type_ : (n : ℕ₋₂) (i : ULevel) → Type (lsucc i)
function
_-Type_
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hProp : (i : ULevel) → Type (lsucc i)
hProp i = -1 -Type i
function
hProp
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hSet : (i : ULevel) → Type (lsucc i)
hSet i = 0 -Type i
function
hSet
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_-Type₀ : (n : ℕ₋₂) → Type₁
function
_-Type₀
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type₁", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
≃-contr : ∀ {i j} {A : Type i} {B : Type j} → is-contr A → is-contr B → is-contr (A ≃ B)
≃-contr pA pB = has-level-in ((cst (contr-center pB) , contr-to-contr-is-equiv _ pA pB) , (λ e → pair= (λ= (λ _ → contr-path pB _)) (from-transp is-equiv _ (prop-path is-equiv-is-prop _ _))))
function
≃-contr
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "cst", "is-contr", "is-equiv", "is-equiv-is-prop", "pair=" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
≃-level : ∀ {i j} {n : ℕ₋₂} {A : Type i} {B : Type j} → (has-level n A → has-level n B → has-level n (A ≃ B))
≃-level {n = ⟨-2⟩} = ≃-contr ≃-level {n = S n} pA pB = Σ-level ⟨⟩ ⟨⟩ where instance _ = pA; _ = pB
function
≃-level
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "Σ-level", "ℕ₋₂", "≃-contr", "⟨-2⟩", "⟨⟩" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
_-Type-level_ : (n : ℕ₋₂) (i : ULevel) → has-level (S n) (n -Type i)
function
_-Type-level_
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hProp-is-set : (i : ULevel) → is-set (hProp i)
hProp-is-set i = -1 -Type-level i
function
hProp-is-set
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "hProp", "is-set" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hSet-level : (i : ULevel) → has-level 1 (hSet i)
hSet-level i = 0 -Type-level i {- The following two lemmas are in NType2 instead of NType because of cyclic dependencies -}
function
hSet-level
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "hSet" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
n -Type i = Subtype (has-level-prop {i} n)
n -Type₀ = n -Type lzero (n -Type-level i) = has-level-in (λ { (A , pA) (B , pB) → aux A B pA pB}) where aux : (A B : Type i) (pA : has-level n A) (pB : has-level n B) → has-level n ((A , pA) == (B , pB)) aux A B pA pB = equiv-preserves-level (nType=-econv (A , ⟨⟩) (B , ⟨⟩)) where instance _ = pA; _ = pB
function
n
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "has-level-prop", "⟨⟩" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hProp₀ = hProp lzero
function
hProp₀
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "hProp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
hSet₀ = hSet lzero -- [n -Type] is an (n+1)-type
function
hSet₀
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "hSet" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
universe-=-level : ∀ {i} {n : ℕ₋₂} {A B : Type i} → (has-level n A → has-level n B → has-level n (A == B))
universe-=-level pA pB = equiv-preserves-level ua-equiv where instance _ = pA; _ = pB
function
universe-=-level
core.lib
core/lib/NType2.agda
[ "lib.Basics", "lib.Equivalence2", "lib.Relation2", "lib.types.Paths", "lib.types.Pi", "lib.types.Sigma", "lib.types.TLevel" ]
[ "Type", "ua-equiv", "ℕ₋₂" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ap-idf : ∀ {i} {A : Type i} {u v : A} (p : u == v) → ap (idf A) p == p
ap-idf idp = idp {- Functoriality of [coe] -}
function
ap-idf
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "idf", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-∙ : ∀ {i} {A B C : Type i} (p : A == B) (q : B == C) (a : A) → coe (p ∙ q) a == coe q (coe p a)
coe-∙ idp q a = idp
function
coe-∙
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "coe", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-! : ∀ {i} {A B : Type i} (p : A == B) (b : B) → coe (! p) b == coe! p b
coe-! idp b = idp
function
coe-!
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "coe", "coe!", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe!-inv-r : ∀ {i} {A B : Type i} (p : A == B) (b : B) → coe p (coe! p b) == b
coe!-inv-r idp b = idp
function
coe!-inv-r
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "coe", "coe!", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe!-inv-l : ∀ {i} {A B : Type i} (p : A == B) (a : A) → coe! p (coe p a) == a
coe!-inv-l idp a = idp
function
coe!-inv-l
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "coe", "coe!", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-inv-adj : ∀ {i} {A B : Type i} (p : A == B) (a : A) → ap (coe p) (coe!-inv-l p a) == coe!-inv-r p (coe p a)
coe-inv-adj idp a = idp
function
coe-inv-adj
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "coe", "coe!-inv-l", "coe!-inv-r", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe!-inv-adj : ∀ {i} {A B : Type i} (p : A == B) (b : B) → ap (coe! p) (coe!-inv-r p b) == coe!-inv-l p (coe! p b)
coe!-inv-adj idp b = idp
function
coe!-inv-adj
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "coe!", "coe!-inv-l", "coe!-inv-r", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-ap-! : ∀ {i j} {A : Type i} (P : A → Type j) {a b : A} (p : a == b) (x : P b) → coe (ap P (! p)) x == coe! (ap P p) x
coe-ap-! P idp x = idp {- Functoriality of transport -}
function
coe-ap-!
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "coe", "coe!", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-∙ : ∀ {i j} {A : Type i} {B : A → Type j} {x y z : A} (p : x == y) (q : y == z) (b : B x) → transport B (p ∙ q) b == transport B q (transport B p b)
transp-∙ idp _ _ = idp
function
transp-∙
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-∙' : ∀ {i j} {A : Type i} {B : A → Type j} {x y z : A} (p : x == y) (q : y == z) (b : B x) → transport B (p ∙' q) b == transport B q (transport B p b)
transp-∙' _ idp _ = idp {- Naturality of transport -}
function
transp-∙'
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-naturality : ∀ {i j k} {A : Type i} {B : A → Type j} {C : A → Type k} (u : {a : A} → B a → C a) {a₀ a₁ : A} (p : a₀ == a₁) → u ∘ transport B p == transport C p ∘ u
transp-naturality f idp = idp
function
transp-naturality
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "a₁", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-idp : ∀ {i j} {A : Type i} {B : Type j} (f : A → B) {x y : A} (p : x == y) → transport (λ a → f a == f a) p idp == idp
transp-idp f idp = idp
function
transp-idp
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ap-∘-cst-coh : ∀ {i} {j} {k} {A : Type i} {B : Type j} {C : Type k} (g : B → C) (b : B) {x y : A} (p : x == y) → ∘-ap g (λ _ → b) p ◃∙ ap-cst (g b) p ◃∎ =ₛ ap (ap g) (ap-cst b p) ◃∎
ap-∘-cst-coh g b p@idp = =ₛ-in idp {- Naturality of homotopies -}
function
ap-∘-cst-coh
core.lib
core/lib/PathFunctor.agda
[ "lib.Base", "lib.PathGroupoid" ]
[ "Type", "ap", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-idf-out : ∀ {i} {A B : Type i} (p : A == B) {u : A} {v : B} → u == v [ (λ X → X) ↓ p ] → coe p u == v
↓-idf-out idp = idf _
function
↓-idf-out
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "coe", "idf", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-idf-in : ∀ {i} {A B : Type i} (p : A == B) {u : A} {v : B} → coe p u == v → u == v [ (λ X → X) ↓ p ]
↓-idf-in idp = idf _ -- Dependent paths over [ap f p]
function
↓-idf-in
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "coe", "idf", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-cst-in2-ap : ∀ {i j k} {A : Type i} {B : Type j} {C : Type k} {a a' : A} {b b' : B} {c c' : C} (f : C → a == a') (g : C → b == b') (r : c == c') → ↓-cst-in2 {q = ap f r} (ap g r) == ↓-ap-in (λ p → b == b' [ (λ _ → B) ↓ p ]) f (apd (λ c → ↓-cst-in {p = f c} (g c)) r)
↓-cst-in2-ap {c = c} {c' = .c} f g idp = ↓-cst-in2-idp (f c) (g c) -- Dependent paths over [ap2 f p q]
function
↓-cst-in2-ap
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "ap", "apd", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
apd↓ : ∀ {i j k} {A : Type i} {B : A → Type j} {C : (a : A) → B a → Type k} (f : {a : A} (b : B a) → C a b) {x y : A} {p : x == y} {u : B x} {v : B y} (q : u == v [ B ↓ p ]) → f u == f v [ (λ xy → C (fst xy) (snd xy)) ↓ pair= p q ]
apd↓ f {p = idp} idp = idp
function
apd↓
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "fst", "idp", "pair=", "snd" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-apd-out : ∀ {i j k} {A : Type i} {B : A → Type j} (C : (a : A) → B a → Type k) {f : Π A B} {x y : A} {p : x == y} {q : f x == f y [ B ↓ p ]} (r : apd f p == q) {u : C x (f x)} {v : C y (f y)} → u == v [ uncurry C ↓ pair= p q ] → u == v [ (λ z → C z (f z)) ↓ p ]
↓-apd-out C {p = idp} idp idp = idp
function
↓-apd-out
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "apd", "idp", "pair=", "uncurry" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
to-transp-weird : ∀ {i j} {A : Type i} {B : A → Type j} {u v : A} {d : B u} {d' d'' : B v} {p : u == v} (q : d == d' [ B ↓ p ]) (r : transport B p d == d'') → (from-transp B p r ∙'ᵈ (! r ∙ to-transp q)) == q
to-transp-weird {p = idp} idp idp = idp -- Something not really clear yet
function
to-transp-weird
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-↓ : ∀ {i j} {A : Type i} (P : A → Type j) {a₁ a₂ : A} (p : a₁ == a₂) (y : P a₂) → transport P (! p) y == y [ P ↓ p ]
transp-↓ _ idp _ = idp
function
transp-↓
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "a₁", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
transp-ap-↓ : ∀ {i j k} {A : Type i} {B : Type j} (P : B → Type k) (h : A → B) {a₁ a₂ : A} (p : a₁ == a₂) (y : P (h a₂)) → transport P (! (ap h p)) y == y [ P ∘ h ↓ p ]
transp-ap-↓ _ _ idp _ = idp
function
transp-ap-↓
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "ap", "a₁", "idp", "transport" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
apd↓=apd : ∀ {i j} {A : Type i} {B : A → Type j} (f : (a : A) → B a) {x y : A} (p : x == y) → (apd f p == ↓-ap-out _ _ p (apd↓ {A = Unit} f {p = idp} p))
apd↓=apd f idp = idp -- Paths in the fibrations [fst] and [snd]
function
apd↓=apd
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "Unit", "apd", "apd↓", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-ap-out= : ∀ {i j k} {A : Type i} {B : Type j} (C : (b : B) → Type k) (f : A → B) {x y : A} (p : x == y) {q : f x == f y} (r : ap f p == q) {u : C (f x)} {v : C (f y)} → u == v [ C ↓ q ] → u == v [ (λ z → C (f z)) ↓ p ]
↓-ap-out= C f idp idp idp = idp -- No idea what that is
function
↓-ap-out=
core.lib
core/lib/PathOver.agda
[ "lib.Base", "lib.PathFunctor", "lib.PathGroupoid", "lib.Equivalence" ]
[ "Type", "ap", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
Rel : ∀ (A : Type i) j → Type (lmax i (lsucc j))
Rel A j = A → A → Type j
function
Rel
core.lib
core/lib/Relation.agda
[ "lib.Base" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
empty-rel : ∀ {A : Type i} → Rel A lzero
empty-rel _ _ = Empty
function
empty-rel
core.lib
core/lib/Relation.agda
[ "lib.Base" ]
[ "Empty", "Rel", "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-equiv : ∀ {i} {A B : Type i} → A == B → A ≃ B
coe-equiv p = (coe p , record { g = coe! p ; f-g = coe!-inv-r p ; g-f = coe!-inv-l p ; adj = coe-inv-adj p }) {- We postulate the univalence axiom as three separate axioms because it’s more natural this way. But it doesn’t change anything in practice. -}
function
coe-equiv
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe", "coe!", "coe!-inv-l", "coe!-inv-r", "coe-inv-adj" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ua : ∀ {i} {A B : Type i} → (A ≃ B) → A == B
postulate
ua
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-equiv-β : ∀ {i} {A B : Type i} (e : A ≃ B) → coe-equiv (ua e) == e
postulate
coe-equiv-β
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-equiv", "ua" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ua-η : ∀ {i} {A B : Type i} (p : A == B) → ua (coe-equiv p) == p
postulate
ua-η
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-equiv", "ua" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ua-equiv : ∀ {i} {A B : Type i} → (A ≃ B) ≃ (A == B)
ua-equiv = equiv ua coe-equiv ua-η coe-equiv-β {- Reductions for coercions along a path constructed with the univalence axiom -}
function
ua-equiv
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-equiv", "coe-equiv-β", "ua", "ua-η" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe-β : ∀ {i} {A B : Type i} (e : A ≃ B) (a : A) → coe (ua e) a == –> e a
coe-β e a = ap (λ e → –> e a) (coe-equiv-β e)
function
coe-β
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "ap", "coe", "coe-equiv-β", "ua" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
coe!-β : ∀ {i} {A B : Type i} (e : A ≃ B) (b : B) → coe! (ua e) b == <– e b
coe!-β e a = ap (λ e → <– e a) (coe-equiv-β e) {- Paths over a path in a universe in the identity fibration reduces -}
function
coe!-β
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "ap", "coe!", "coe-equiv-β", "ua" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-idf-ua-out : ∀ {i} {A B : Type i} (e : A ≃ B) {u : A} {v : B} → u == v [ (λ x → x) ↓ (ua e) ] → –> e u == v
↓-idf-ua-out e p = ! (coe-β e _) ∙ ↓-idf-out (ua e) p
function
↓-idf-ua-out
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-β", "ua", "↓-idf-out" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
↓-idf-ua-in : ∀ {i} {A B : Type i} (e : A ≃ B) {u : A} {v : B} → –> e u == v → u == v [ (λ x → x) ↓ (ua e) ]
↓-idf-ua-in e p = ↓-idf-in (ua e) (coe-β e _ ∙ p) {- Induction along equivalences If [P] is a predicate over all equivalences in a universe [Type i] and [d] is a proof of [P] over all [ide A], then we get a section of [P] -}
function
↓-idf-ua-in
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-β", "ua", "↓-idf-in" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
equiv-induction : ∀ {i j} (P : {A B : Type i} (f : A ≃ B) → Type j) (d : (A : Type i) → P (ide A)) {A B : Type i} (f : A ≃ B) → P f
equiv-induction {i} {j} P d f = transport P (coe-equiv-β f) (aux P d (ua f)) where aux : ∀ {j} (P : {A : Type i} {B : Type i} (f : A ≃ B) → Type j) (d : (A : Type i) → P (ide A)) {A B : Type i} (p : A == B) → P (coe-equiv p) aux P d idp = d _ {- Univalence for pointed types -}
function
equiv-induction
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Type", "coe-equiv", "coe-equiv-β", "ide", "idp", "transport", "ua" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
⊙ua : ∀ {i} {X Y : Ptd i} → X ⊙≃ Y → X == Y
⊙ua ((f , p) , ie) = ptd= (ua (f , ie)) (↓-idf-ua-in (f , ie) p)
function
⊙ua
core.lib
core/lib/Univalence.agda
[ "lib.Base", "lib.PathGroupoid", "lib.PathFunctor", "lib.Equivalence", "lib.PathOver" ]
[ "Ptd", "ptd=", "ua", "↓-idf-ua-in" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
Cube {i} {A : Type i} {a₀₀₀ : A} : {a₀₁₀ a₁₀₀ a₁₁₀ a₀₀₁ a₀₁₁ a₁₀₁ a₁₁₁ : A} {p₀₋₀ : a₀₀₀ == a₀₁₀} {p₋₀₀ : a₀₀₀ == a₁₀₀} {p₋₁₀ : a₀₁₀ == a₁₁₀} {p₁₋₀ : a₁₀₀ == a₁₁₀} (sq₋₋₀ : Square p₀₋₀ p₋₀₀ p₋₁₀ p₁₋₀) -- left {p₀₋₁ : a₀₀₁ == a₀₁₁} {p₋₀₁ : a₀₀₁ == a₁₀₁} {p₋₁₁ : a₀₁₁ == a₁₁₁} {p₁₋₁ : a₁₀₁ == a₁₁₁} (sq₋₋₁ :...
data
Cube
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Square", "Type", "idc", "ids" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
fill-cube-left-unique : ∀ {i} {A : Type i} {a₀₀₀ : A} {a₀₁₀ a₁₀₀ a₁₁₀ a₀₀₁ a₀₁₁ a₁₀₁ a₁₁₁ : A} {p₀₋₀ : a₀₀₀ == a₀₁₀} {p₋₀₀ : a₀₀₀ == a₁₀₀} {p₋₁₀ : a₀₁₀ == a₁₁₀} {p₁₋₀ : a₁₀₀ == a₁₁₀} {sq₋₋₀ : Square p₀₋₀ p₋₀₀ p₋₁₀ p₁₋₀} -- left {p₀₋₁ : a₀₀₁ == a₀₁₁} {p₋₀₁ : a₀₀₁ == a₁₀₁} {p₋₁₁ : a₀₁₁ == a₁₁₁} {p₁₋₁ : a₁₀₁ ...
fill-cube-left-unique idc = idp
function
fill-cube-left-unique
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Cube", "Square", "Type", "fst", "idc", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
fill-cube-right-unique : ∀ {i} {A : Type i} {a₀₀₀ : A} {a₀₁₀ a₁₀₀ a₁₁₀ a₀₀₁ a₀₁₁ a₁₀₁ a₁₁₁ : A} {p₀₋₀ : a₀₀₀ == a₀₁₀} {p₋₀₀ : a₀₀₀ == a₁₀₀} {p₋₁₀ : a₀₁₀ == a₁₁₀} {p₁₋₀ : a₁₀₀ == a₁₁₀} {sq₋₋₀ : Square p₀₋₀ p₋₀₀ p₋₁₀ p₁₋₀} -- left {p₀₋₁ : a₀₀₁ == a₀₁₁} {p₋₀₁ : a₀₀₁ == a₁₀₁} {p₋₁₁ : a₀₁₁ == a₁₁₁} {p₁₋₁ : a₁₀₁...
fill-cube-right-unique idc = idp {- Paths as degenerate cubes -}
function
fill-cube-right-unique
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Cube", "Square", "Type", "fst", "idc", "idp" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
ap-cube : ∀ {i j} {A : Type i} {B : Type j} (f : A → B) {a₀₀₀ a₀₁₀ a₁₀₀ a₁₁₀ a₀₀₁ a₀₁₁ a₁₀₁ a₁₁₁ : A} {p₀₋₀ : a₀₀₀ == a₀₁₀} {p₋₀₀ : a₀₀₀ == a₁₀₀} {p₋₁₀ : a₀₁₀ == a₁₁₀} {p₁₋₀ : a₁₀₀ == a₁₁₀} {sq₋₋₀ : Square p₀₋₀ p₋₀₀ p₋₁₀ p₁₋₀} -- left {p₀₋₁ : a₀₀₁ == a₀₁₁} {p₋₀₁ : a₀₀₁ == a₁₀₁} {p₋₁₁ : a₀₁₁ == a₁₁₁} {p₁₋₁ ...
ap-cube f idc = idc
function
ap-cube
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Cube", "Square", "Type", "ap-square", "idc" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
natural-cube : ∀ {i j} {A : Type i} {B : Type j} {f₀₀ f₀₁ f₁₀ f₁₁ : A → B} {p₀₋ : (a : A) → f₀₀ a == f₀₁ a} {p₋₀ : (a : A) → f₀₀ a == f₁₀ a} {p₋₁ : (a : A) → f₀₁ a == f₁₁ a} {p₁₋ : (a : A) → f₁₀ a == f₁₁ a} (sq : ∀ a → Square (p₀₋ a) (p₋₀ a) (p₋₁ a) (p₁₋ a)) {x y : A} (q : x == y) → Cube (sq x) (sq y) ...
natural-cube sq idp = x-degen-cube idp
function
natural-cube
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Cube", "Square", "Type", "idp", "sq" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6
cube-rotate-x→z : ∀ {i} {A : Type i} {a₀₀₀ a₀₁₀ a₁₀₀ a₁₁₀ a₀₀₁ a₀₁₁ a₁₀₁ a₁₁₁ : A} {p₀₋₀ : a₀₀₀ == a₀₁₀} {p₋₀₀ : a₀₀₀ == a₁₀₀} {p₋₁₀ : a₀₁₀ == a₁₁₀} {p₁₋₀ : a₁₀₀ == a₁₁₀} {sq₋₋₀ : Square p₀₋₀ p₋₀₀ p₋₁₀ p₁₋₀} -- left {p₀₋₁ : a₀₀₁ == a₀₁₁} {p₋₀₁ : a₀₀₁ == a₁₀₁} {p₋₁₁ : a₀₁₁ == a₁₁₁} {p₁₋₁ : a₁₀₁ == a₁₁₁} {...
cube-rotate-x→z idc = idc
function
cube-rotate-x→z
core.lib.cubical
core/lib/cubical/Cube.agda
[ "lib.Base", "lib.PathGroupoid", "lib.cubical.Square" ]
[ "Cube", "Square", "Type", "idc" ]
https://github.com/HoTT/HoTT-Agda
1037d82edcf29b620677a311dcfd4fc2ade2faa6