Let x0 of type ι be given.
Let x1 of type ι → ι → ι be given.
Let x2 of type ι → ι → ι be given.
Assume H0:
∀ x3 . prim1 x3 x0 ⟶ ∀ x4 . prim1 x4 x0 ⟶ x1 x3 x4 = x2 x3 x4.
Apply unknownprop_075a71193d04eff3936ee7246a228619e3dbe0ea2b9d96d40e9b467470ee4a92 with
x0,
λ x3 . 0fc90.. x0 (λ x4 . x1 x3 x4),
λ x3 . 0fc90.. x0 (λ x4 . x2 x3 x4).
Let x3 of type ι be given.
Apply unknownprop_075a71193d04eff3936ee7246a228619e3dbe0ea2b9d96d40e9b467470ee4a92 with
x0,
λ x4 . x1 x3 x4,
λ x4 . x2 x3 x4.
Let x4 of type ι be given.
Apply H0 with
x3,
x4 leaving 2 subgoals.
The subproof is completed by applying H1.
The subproof is completed by applying H2.