Let x0 of type ο be given.
Apply xm with
x0,
prim1 4a7ef.. (If_i x0 (4ae4a.. 4a7ef..) 4a7ef..) ⟶ x0 leaving 2 subgoals.
Assume H0: x0.
The subproof is completed by applying H0.
Apply If_i_0 with
x0,
4ae4a.. 4a7ef..,
4a7ef..,
λ x1 x2 . prim1 4a7ef.. x2 ⟶ x0 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply FalseE with
x0.
Apply unknownprop_da3368fefc81e401e6446c98c0c04ab87d76d6f97c47fe5fd07c1e3c2f00ef6a with
4a7ef...
The subproof is completed by applying H1.