diff --git a/tests/lean/hott/tele_eq.hlean b/tests/lean/hott/tele_eq.hlean new file mode 100644 index 000000000..abc8f602f --- /dev/null +++ b/tests/lean/hott/tele_eq.hlean @@ -0,0 +1,18 @@ +constant A₁ : Type +constant A₂ : A₁ → Type +constant A₃ : Π (a₁ : A₁), A₂ a₁ → Type + +structure foo := +mk :: (a₁ : A₁) (a₂ : A₂ a₁) (a₃ : A₃ a₁ a₂) + +theorem foo.eq {a₁ b₁ : A₁} {a₂ : A₂ a₁} {b₂ : A₂ b₁} {a₃ : A₃ a₁ a₂} {b₃ : A₃ b₁ b₂} + (H₁ : a₁ = b₁) (H₂ : eq.rec_on H₁ a₂ = b₂) (H₃ : eq.rec_on H₂ (eq.rec_on H₁ a₃) = b₃) + : foo.mk a₁ a₂ a₃ = foo.mk b₁ b₂ b₃ := +begin + cases H₁, + cases H₂, + cases H₃, + apply rfl +end + +print definition foo.eq