Let x0 of type ι be given.
Apply unknownprop_872273e895264b163d3a3b042c5d1abf262e26919401a643ccce2dcdcb6a14ef with
x0,
λ x1 x2 . d634d.. x1 = 0.
Apply unknownprop_a297e56f8bdca4759c242f4239a030f8b8676cee62a6758763e7f37b72905c22 with
x0,
0 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying SNo_0.