Let x0 of type ι be given.
Apply unknownprop_872273e895264b163d3a3b042c5d1abf262e26919401a643ccce2dcdcb6a14ef with
x0,
λ x1 x2 . 28f8d.. x1 = x0.
Apply unknownprop_b9b7bfb6c9b892d1b6018106403bf15df7213abab01ccecd88c7179d2ef8e566 with
x0,
0 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying real_0.