Let x0 of type ο be given.
Let x1 of type ο be given.
Assume H0: x0.
Apply unknownprop_b777a79c17f16cd28153af063df26a4626b11c1f1d4394d7f537c11837ab0962 with
exactly1of2 x0 x1.
Apply unknownprop_3da24d51bcee755e70413ee89aaa40a0b231132f51a75cb86f122fc0fbfbaea8 with
x0,
x1 leaving 3 subgoals.
The subproof is completed by applying H2.
Assume H3: x0.
Assume H4: x1.
Apply notE with
x1 leaving 2 subgoals.
The subproof is completed by applying H1.
The subproof is completed by applying H4.
Apply notE with
x0 leaving 2 subgoals.
The subproof is completed by applying H3.
The subproof is completed by applying H0.