Let x0 of type ι be given.
Let x1 of type ι be given.
Apply unknownprop_31dc82295b7aa4a340f2278c1cf4aa729add061fe389e3a99b659752ce7d8635 with
x0,
λ x2 x3 . x2 = x1.
Apply unknownprop_31dc82295b7aa4a340f2278c1cf4aa729add061fe389e3a99b659752ce7d8635 with
x1,
λ x2 x3 . 158d3.. (f6917.. x0) = x2.
Apply H0 with
λ x2 x3 . 158d3.. x3 = 158d3.. (f6917.. x1).
Let x2 of type ι → ι → ο be given.
The subproof is completed by applying H1.