Let x0 of type ι be given.
Apply unknownprop_a23ec6a55ac212526d74cbf0d04096929ad453b0eb0f8023e32b8a33930d39fb with
x0,
0 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying unknownprop_48b433c7921d49bb7e4205d5d86f68a84030c1b7df98f7a59f08a308cb665298 with x0.