Let x0 of type ι → ο be given.
Let x1 of type (ι → ο) → ο be given.
Assume H0: x1 x0.
Let x2 of type ο be given.
Apply H1 with
x0.
Apply unknownprop_389e2fb1855352fcc964ea44fe6723d7a1c2d512f04685300e3e97621725b977 with
407b5.. x0 = 407b5.. x0,
x1 x0 leaving 2 subgoals.
Let x3 of type ((ι → ο) → ο) → ((ι → ο) → ο) → ο be given.
The subproof is completed by applying H2.
The subproof is completed by applying H0.