Let x0 of type ι be given.
Let x1 of type ι → ο be given.
Apply unknownprop_dec2978c0a72cebd51fcab0a380f03d4d80d1ccd8f826d378953148c305a60f0 with
4ae4a.. 4a7ef..,
x0,
x1 x0 leaving 3 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_459e83445e8fa8de123fbedd463b0dc265e95a234964864b65a5d4287e2775ea with
x0,
x1 leaving 2 subgoals.
The subproof is completed by applying H3.
The subproof is completed by applying H1.
Apply H3 with
λ x2 x3 . x1 x3.
The subproof is completed by applying H2.