Let x0 of type ι → ο be given.
Let x1 of type ι → ι → ο be given.
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 → ι → ο be given.
Assume H2: ∀ x6 x7 . x1 x6 x7 ⟶ x5 x6 x7.
Assume H3: ∀ x6 . x0 x6 ⟶ x5 x6 x6.
Assume H4: ∀ x6 x7 . x5 x6 x7 ⟶ x5 x7 x6.
Assume H5: ∀ x6 x7 x8 . x5 x6 x7 ⟶ x5 x7 x8 ⟶ x5 x6 x8.
Apply H5 with
x2,
x3,
x4 leaving 2 subgoals.
Apply H0 with
x5 leaving 4 subgoals.
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.
Apply H1 with
x5 leaving 4 subgoals.
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.