Let x0 of type ι be given.
Apply unknownprop_d74508268cf2245bb4de852843c85bf4733bd48f6383eaac9c68dfae0d149115 with
x0,
4a7ef...
Let x1 of type ι be given.
Apply iffI with
prim1 x1 x0,
prim1 x1 4a7ef.. leaving 2 subgoals.
Apply FalseE with
prim1 x1 4a7ef...
Apply H0 with
x1.
The subproof is completed by applying H1.
Apply FalseE with
prim1 x1 x0.
Apply unknownprop_da3368fefc81e401e6446c98c0c04ab87d76d6f97c47fe5fd07c1e3c2f00ef6a with
x1.
The subproof is completed by applying H1.