Let x0 of type ι be given.
Let x1 of type ι → ι be given.
Apply unknownprop_075a71193d04eff3936ee7246a228619e3dbe0ea2b9d96d40e9b467470ee4a92 with
x0,
λ x2 . f482f.. (0fc90.. x0 (λ x3 . x1 x3)) x2,
λ x2 . x1 x2.
Let x2 of type ι be given.
Apply unknownprop_b456609235d152f08bccfce314d541d7c44f3716137c00b0ce21cf467ba83d17 with
x0,
x1,
x2.
The subproof is completed by applying H0.