Let x0 of type ο be given.
Let x1 of type ο be given.
Assume H0:
not (or x0 x1).
Apply H1 leaving 2 subgoals.
Apply unknownprop_e284d5f5a7c3a1c03631041619c4ddee06de72330506f5f6d9d6b18df929e48c with
x0.
Assume H2: x0.
Apply notE with
or x0 x1 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_7c688f24c3595bc4b513e911d7f551c8ccfedc804a6c15c02d25d01a2996aec6 with
x0,
x1.
The subproof is completed by applying H2.
Apply unknownprop_e284d5f5a7c3a1c03631041619c4ddee06de72330506f5f6d9d6b18df929e48c with
x1.
Assume H2: x1.
Apply notE with
or x0 x1 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_c29620ea10188dd8ed7659bc2875dc8e08f16ffd29713f8ee3146f02f9828ceb with
x0,
x1.
The subproof is completed by applying H2.