This commit is contained in:
Michael Zhang 2024-10-19 16:56:23 -05:00
parent 1aeebb0c39
commit d15eefb625
4 changed files with 12 additions and 8 deletions

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@ -7,4 +7,4 @@ open import Cubical.Foundations.Prelude
example : {A : Type} {B : A Type}
((x : A) isProp (B x))
isProp ((x : A) B x)
example B-x-prop x y = λ i z B-x-prop {! !} {! !} {! !} i
example B-x-prop fx fy = λ i z B-x-prop z (B-x-prop z (fx z) (fy z) i) (B-x-prop z (fx z) (fy z) i) i

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@ -2,4 +2,4 @@
module CubicalHott.Lemma3-11-3 where
open import Cubical.Foundations.Prelude
open import Cubical.Foundations.Prelude

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@ -3,13 +3,17 @@
module CubicalHott.Lemma3-11-4 where
open import Cubical.Foundations.Prelude
open import CubicalHott.Example3-6-2 renaming (example to example3-6-2)
lemma : {A : Type} isProp (isContr A)
lemma {A} A-contr-x @ (x , px) (y , py) i =
let A-is-set = isProp→isSet (isContr→isProp A-contr-x) in
-- px y i ≡ z
-- ———— Boundary (wanted) —————————————————————————————————————
-- i = i0 ⊢ px z
-- i = i1 ⊢ py z
px y i , λ z j {! !}
px y i , goal i where
helper1 : isProp ((z : A) px y i z)
helper1 = example3-6-2 (λ x isContr→isProp {! !})
goal : PathP (λ i (z : A) px y i z) px py
goal i z = {! helper1 !}
-- λ y' j → isProp→isSet (isContr→isProp A-contr-x) (px y i) y' {! !} {! !} j i

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@ -9,6 +9,6 @@ open import Cubical.Data.Nat
z = isContr
theorem : {X : Type} (n : ) isProp (isOfHLevel n X)
theorem zero x y i = snd x (fst y) i , {! !}
theorem zero = {! !}
theorem (suc zero) x y = {! !}
theorem (suc (suc n)) x y = {! !}