Let x0 of type ι → ο be given.
Let x1 of type ι → ι → ι be given.
Assume H0: ∀ x2 x3 . x0 x2 ⟶ x0 x3 ⟶ x0 (x1 x2 x3).
Assume H1: ∀ x2 x3 x4 . x0 x2 ⟶ x0 x3 ⟶ x0 x4 ⟶ x1 x2 (x1 x3 x4) = x1 (x1 x2 x3) x4.
Assume H2: ∀ x2 x3 . x0 x2 ⟶ x0 x3 ⟶ x1 x2 x3 = x1 x3 x2.
Let x2 of type ι be given.
Let x3 of type ι be given.
Let x4 of type ι be given.
Let x5 of type ι be given.
Assume H3: x0 x2.
Assume H4: x0 x3.
Assume H5: x0 x4.
Assume H6: x0 x5.
Claim L7: ∀ x6 x7 x8 . x0 x6 ⟶ x0 x7 ⟶ x0 x8 ⟶ x1 x6 (x1 x7 x8) = x1 x7 (x1 x6 x8)
Let x6 of type ι be given.
Let x7 of type ι be given.
Let x8 of type ι be given.
Assume H7: x0 x6.
Assume H8: x0 x7.
Assume H9: x0 x8.
Apply H1 with
x7,
x6,
x8,
λ x9 x10 . x1 x6 (x1 x7 x8) = x10 leaving 4 subgoals.
The subproof is completed by applying H8.
The subproof is completed by applying H7.
The subproof is completed by applying H9.
Apply H2 with
x6,
x7,
λ x9 x10 . x1 x6 (x1 x7 x8) = x1 x9 x8 leaving 3 subgoals.
The subproof is completed by applying H7.
The subproof is completed by applying H8.
Apply H1 with
x6,
x7,
x8 leaving 3 subgoals.
The subproof is completed by applying H7.
The subproof is completed by applying H8.
The subproof is completed by applying H9.
Apply unknownprop_77abb21c1bc5d8827a709ff6193c31007b632f367e6b267e2c3e7b20812c396f with
x0,
x1,
x2,
x3,
x4,
x5 leaving 7 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying L7.
The subproof is completed by applying H2.
The subproof is completed by applying H3.
The subproof is completed by applying H4.
The subproof is completed by applying H5.
The subproof is completed by applying H6.