Let x0 of type ι be given.
Apply unknownprop_872273e895264b163d3a3b042c5d1abf262e26919401a643ccce2dcdcb6a14ef with
x0,
λ x1 x2 . 28f8d.. x1 = x0.
Apply unknownprop_be33d753151483c7bac1e70b0036b153d449838792ed17caa64a7328dfc698e0 with
x0,
0 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying SNo_0.