Let x0 of type ι be given.
Apply unknownprop_2c27682abc32e1c8a2160a07043a81afe1f256df4f0472edf3cf11efdcea8609 with
x0,
x0 = 09072.. (e4431.. x0) (λ x1 . prim1 x1 x0) leaving 2 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_871f47e586f081f8c2889d151af4c3c58de61cee9c896325d78d64c616f91eea with
e4431.. x0,
x0 leaving 2 subgoals.
The subproof is completed by applying H1.
The subproof is completed by applying H2.