diff --git a/src/hott/03-equivalences.rzk.md b/src/hott/03-equivalences.rzk.md index 56aaf0db..cb78073c 100644 --- a/src/hott/03-equivalences.rzk.md +++ b/src/hott/03-equivalences.rzk.md @@ -535,8 +535,8 @@ The retraction associated with an equivalence is an equivalence. ## Section-retraction pairs -A pair of maps `s : A' → B` and `r : B → A` is a section-retraction pair if the -composite `A' → A` is an equivalence. +A pair of maps `s : A' → B` and `r : B → A` is a **section-retraction pair** if +the composite `A' → A` is an equivalence. ```rzk #section is-section-retraction-pair diff --git a/src/hott/08-families-of-maps.rzk.md b/src/hott/08-families-of-maps.rzk.md index 45e580e9..ea235e80 100644 --- a/src/hott/08-families-of-maps.rzk.md +++ b/src/hott/08-families-of-maps.rzk.md @@ -318,35 +318,35 @@ The canonical map from a type to its the free path type is an equivalence. #def free-paths ( A : U) : U - := Σ ( (x, y) : product A A) , (x = y) + := Σ ( (x , y) : product A A) , (x = y) #def constant-free-path ( A : U) ( a : A) : free-paths A - := ((a,a), refl) + := ((a , a) , refl) #def is-constant-free-path ( A : U) - ( ((a,y), p) : free-paths A) + ( ((a , y) , p) : free-paths A) : constant-free-path A a = ((a,y), p) := ind-path A a - ( \ x p' → constant-free-path A a = ((a,x), p')) + ( \ x p' → constant-free-path A a = ((a , x) , p')) ( refl) ( y) ( p) #def start-free-path ( A : U) : free-paths A → A - := \ ((a,_), _) → a + := \ ((a , _) , _) → a #def is-equiv-constant-free-path ( A : U) : is-equiv A (free-paths A) (constant-free-path A) := - ( ( start-free-path A, \ _ → refl) - , ( start-free-path A, is-constant-free-path A)) + ( ( start-free-path A , \ _ → refl) + , ( start-free-path A , is-constant-free-path A)) ``` ## Pullback of a type family diff --git a/src/simplicial-hott/05-segal-types.rzk.md b/src/simplicial-hott/05-segal-types.rzk.md index a2395f1d..ed74e32c 100644 --- a/src/simplicial-hott/05-segal-types.rzk.md +++ b/src/simplicial-hott/05-segal-types.rzk.md @@ -238,20 +238,20 @@ type. #def fibered-arr-free-arr ( A : U) - : (arr A) → (fibered-arr A) + : arr A → fibered-arr A := \ k → (k 0₂ , (k 1₂ , k)) #def is-equiv-fibered-arr-free-arr ( A : U) : is-equiv (arr A) (fibered-arr A) (fibered-arr-free-arr A) := - ( ( \ (_ , (_ , f)) → f , \ _ → refl) - , ( \ (_ , (_ , f)) → f , \ _ → refl)) + ( ( (\ (_ , (_ , f)) → f) , (\ _ → refl)) + , ( (\ (_ , (_ , f)) → f) , (\ _ → refl))) #def equiv-fibered-arr-free-arr ( A : U) : Equiv (arr A) (fibered-arr A) - := ( fibered-arr-free-arr A , is-equiv-fibered-arr-free-arr A) + := (fibered-arr-free-arr A , is-equiv-fibered-arr-free-arr A) ``` And the corresponding uncurried version. @@ -266,14 +266,14 @@ And the corresponding uncurried version. #def fibered-arr-free-arr' ( A : U) : arr A → fibered-arr' A - := \ σ → ((σ 0₂, σ 1₂), σ) + := \ σ → ((σ 0₂ , σ 1₂) , σ) #def is-equiv-fibered-arr-free-arr' ( A : U) : is-equiv (arr A) (fibered-arr' A) (fibered-arr-free-arr' A) := - ( ( \ ((_ , _) , σ) → σ , \ _ → refl) - , ( \ ((_ , _) , σ) → σ , \ _ → refl)) + ( ( (\ ((_ , _) , σ) → σ) , (\ _ → refl)) + , ( (\ ((_ , _) , σ) → σ) , (\ _ → refl))) ``` ## The Segal condition