Let x0 of type ι → ι → ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Apply unknownprop_34f20b60ad6d2956b7a8470b3a7eb1f27be254c9d3b55cfa21302e6ea7eed305 with
x1,
x2,
λ x3 x4 . x0 x3 (f482f.. (11e73.. x1 x2) (4ae4a.. 4a7ef..)) = x0 x1 x2.
Apply unknownprop_c21db9eeb1cd5feb3cc621de0ea32fdccd69e665404c76a1b527a4c87e56a838 with
x1,
x2,
λ x3 x4 . x0 x1 x3 = x0 x1 x2.
Let x3 of type ι → ι → ο be given.
Assume H0: x3 (x0 x1 x2) (x0 x1 x2).
The subproof is completed by applying H0.