Mario Carneiro digama0
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| universes i j k l m | |
| def empty.elim (A : Sort i) (H : empty) : A := | |
| @empty.rec (λ e, A) H | |
| def iso0 {A} {C : (empty → A) → Sort i} (f : empty → A) (H : C (empty.elim A)) : C f := | |
| eq.rec H (funext (empty.rec _) : empty.elim A = f) | |
| def iso1 {A} {C : (unit → A) → Sort i} (f : unit → A) (H : C (λu, f ())) : C f := | |
| eq.rec H (funext (λu, unit.rec rfl u) : (λu, f ()) = f) |
NewerOlder